remembering-renames/sparse-checkout: fix section levels

In 5275100 (doc: add some missing technical documents, 2025-10-02),
some documents were added to the default set of files to be rendered.

Unfortunately, this led to CI failures since Oct 10 (see
https://github.com/git/git/actions/runs/18418984731), the eight most
recent pushes of Git's `master` as of time of writing.

In the preceding commit, the numbered lists that started at zero (which
AsciiDoc cannot handle) were changed, but there are still the following
problems:

  asciidoctor: WARNING: remembering-renames.adoc: line 38: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 94: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 141: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 142: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 184: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 185: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 257: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 288: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 289: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 290: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 397: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 424: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 485: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 486: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: remembering-renames.adoc: line 487: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 17: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 95: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 258: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 303: section title out of sequence: expected level 1, got level 2      asciidoctor: WARNING: sparse-checkout.adoc: line 316: section title out of sequence: expected level 1, got level 2      asciidoctor: WARNING: sparse-checkout.adoc: line 545: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 612: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 752: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 824: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 895: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 923: section title out of sequence: expected level 1, got level 2
  asciidoctor: WARNING: sparse-checkout.adoc: line 1053: section title out of sequence: expected level 1, got level 2

Let's change the level of the sections to fix those warnings, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

Documentation/technical/remembering-renames.adoc

@@ -35,7 +35,7 @@ Outline:
      "true".
 
 
-=== 1. Assumptions ===
+== 1. Assumptions ==
 
 There are two assumptions that will hold throughout this document:
 
@@ -91,7 +91,7 @@ this config setting, but we have to discuss a few more cases to show why;
 this discussion is deferred until section 8.
 
 
-=== 2. How rebasing and cherry-picking work ===
+== 2. How rebasing and cherry-picking work ==
 
 Consider the following setup (from the git-rebase manpage):
 
@@ -138,8 +138,8 @@ Conceptually the two statements above are the same as a three-way merge of
 B, B', and C, at least the parts before you decide to record a commit.
 
 
-=== 3. Why the renames on MERGE_SIDE1 in any given pick are always a ===
-===    superset of the renames on MERGE_SIDE1 for the next pick.     ===
+== 3. Why the renames on MERGE_SIDE1 in any given pick are always a ==
+==    superset of the renames on MERGE_SIDE1 for the next pick.     ==
 
 The merge machinery uses the filenames it is fed from MERGE_BASE,
 MERGE_SIDE1, and MERGE_SIDE2.  It will only move content to a different
@@ -181,8 +181,8 @@ are a subset of those between E and G.  Equivalently, all renames between E
 and G are a superset of those between A and A'.
 
 
-=== 4. Why any rename on MERGE_SIDE1 in any given pick is _almost_   ===
-===    always also a rename on MERGE_SIDE1 for the next pick.        ===
+== 4. Why any rename on MERGE_SIDE1 in any given pick is _almost_   ==
+==    always also a rename on MERGE_SIDE1 for the next pick.        ==
 
 Let's again look at the first two picks:
 
@@ -254,7 +254,7 @@ were detected as renames, A:oldfile and A':newfile should also be
 detectable as renames almost always.
 
 
-=== 5. A detailed description of the counter-examples to #3.         ===
+== 5. A detailed description of the counter-examples to #3.         ==
 
 We already noted in section 3 that rename/rename(1to1) (i.e. both sides
 renaming a file the same way) was one counter-example.  The more
@@ -285,9 +285,9 @@ E:oldfile -> G:newfile would be detected as a rename, but A:oldfile and
 A':newfile would not be.
 
 
-=== 6. Why the special cases in #4 are still fully reasonable to use to    ===
-===    pair up files for three-way content merging in the merge machinery, ===
-===    and why they do not affect the correctness of the merge.            ===
+== 6. Why the special cases in #4 are still fully reasonable to use to    ==
+==    pair up files for three-way content merging in the merge machinery, ==
+==    and why they do not affect the correctness of the merge.            ==
 
 In the rename/rename(1to1) case, A:newfile and A':newfile are not renames
 since they use the *same* filename.  However, files with the same filename
@@ -394,7 +394,7 @@ cases 1 and 3 seem to provide as good or better behavior with the
 optimization than without.
 
 
-=== 7. Interaction with skipping of "irrelevant" renames ===
+== 7. Interaction with skipping of "irrelevant" renames ==
 
 Previous optimizations involved skipping rename detection for paths
 considered to be "irrelevant".  See for example the following commits:
@@ -421,7 +421,7 @@ detection -- though we can limit it to the paths for which we have not
 already detected renames.
 
 
-=== 8. Additional items that need to be cached ===
+== 8. Additional items that need to be cached ==
 
 It turns out we have to cache more than just renames; we also cache:
 
@@ -482,9 +482,9 @@ we store the trees to compare with what we are asked to merge next
 time.
 
 
-=== 9. How directory rename detection interacts with the above and   ===
-===    why this optimization is still safe even if                   ===
-===    merge.directoryRenames is set to "true".                      ===
+== 9. How directory rename detection interacts with the above and   ==
+==    why this optimization is still safe even if                   ==
+==    merge.directoryRenames is set to "true".                      ==
 
 As noted in the assumptions section:
 

Documentation/technical/sparse-checkout.adoc

@@ -14,7 +14,7 @@ Table of contents:
   * Reference Emails
 
 
-=== Terminology ===
+== Terminology ==
 
 cone mode: one of two modes for specifying the desired subset of files
 	in a sparse-checkout.  In cone-mode, the user specifies
@@ -92,7 +92,7 @@ vivifying: When a command restores a tracked file to the working tree (and
 	file), this is referred to as "vivifying" the file.
 
 
-=== Purpose of sparse-checkouts ===
+== Purpose of sparse-checkouts ==
 
 sparse-checkouts exist to allow users to work with a subset of their
 files.
@@ -255,7 +255,7 @@ will perceive the checkout as dense, and commands should thus behave as if
 all files are present.
 
 
-=== Usecases of primary concern ===
+== Usecases of primary concern ==
 
 Most of the rest of this document will focus on Behavior A and Behavior
 B.  Some notes about the other two cases and why we are not focusing on
@@ -300,7 +300,7 @@ Behavior C do not assume they are part of the Behavior B camp and propose
 patches that break things for the real Behavior B folks.
 
 
-=== Oversimplified mental models ===
+== Oversimplified mental models ==
 
 An oversimplification of the differences in the above behaviors is:
 
@@ -313,7 +313,7 @@ An oversimplification of the differences in the above behaviors is:
 	      they can later lazily be populated instead.
 
 
-=== Desired behavior ===
+== Desired behavior ==
 
 As noted previously, despite the simple idea of just working with a subset
 of files, there are a range of different behavioral changes that need to be
@@ -542,7 +542,7 @@ understanding these differences can be beneficial.
   * gitk?
 
 
-=== Behavior classes ===
+== Behavior classes ==
 
 From the above there are a few classes of behavior:
 
@@ -609,7 +609,7 @@ From the above there are a few classes of behavior:
     specification.
 
 
-=== Subcommand-dependent defaults ===
+== Subcommand-dependent defaults ==
 
 Note that we have different defaults depending on the command for the
 desired behavior :
@@ -749,7 +749,7 @@ desired behavior :
     implemented.
 
 
-=== Sparse specification vs. sparsity patterns ===
+== Sparse specification vs. sparsity patterns ==
 
 In a well-behaved situation, the sparse specification is given directly
 by the $GIT_DIR/info/sparse-checkout file.  However, it can transiently
@@ -821,7 +821,7 @@ under behavior B index operations are lumped with history and tend to
 operate full-tree.
 
 
-=== Implementation Questions ===
+== Implementation Questions ==
 
   * Do the options --scope={sparse,all} sound good to others?  Are there better
     options?
@@ -892,7 +892,7 @@ operate full-tree.
     is seamless for them.
 
 
-=== Implementation Goals/Plans ===
+== Implementation Goals/Plans ==
 
  * Get buy-in on this document in general.
 
@@ -920,7 +920,7 @@ operate full-tree.
      commands.  IMPORTANT: make sure diff machinery changes don't mess with
      format-patch, fast-export, etc.
 
-=== Known bugs ===
+== Known bugs ==
 
 This list used to be a lot longer (see e.g. [1,2,3,4,5,6,7,8,9]), but we've
 been working on it.
@@ -1050,7 +1050,7 @@ been working on it.
     https://lore.kernel.org/git/CABPp-BEkJQoKZsQGCYioyga_uoDQ6iBeW+FKr8JhyuuTMK1RDw@mail.gmail.com/
 
 
-=== Reference Emails ===
+== Reference Emails ==
 
 Emails that detail various bugs we've had in sparse-checkout: