Fix link references

Author: stevepiercy

docs/backend/upgrading/version-specific-migration/upgrade-to-60.md

@@ -168,7 +168,7 @@ The standard theme in Classic UI was updated to Bootstrap 5, CSS variables, and
 If you have a theme that builds on Barceloneta, you most likely need various changes.
 
 It may be best to start with a fresh theme, and try to keep the changes minimal.
-The training documentation lists {doc}`three possible theming strategies <theming_plone_5/index>`:
+The training documentation lists {doc}`three possible theming strategies <training-2022:theming_plone_5/index>`:
 
 -   Create a theme based on Barceloneta.
 -   Create a theme from scratch.

docs/contributing/documentation/themes-and-extensions.md

@@ -58,9 +58,9 @@ We use several MyST and Sphinx extensions to enhance the presentation of Plone d
 -   [`sphinx_reredirects`](https://documatt.com/sphinx-reredirects/) handles redirects for moved pages.
 -   [`sphinx_sitemap`](https://pypi.org/project/sphinx-sitemap/) generates multiversion and multilanguage [sitemaps.org](https://www.sitemaps.org/protocol.html) compliant sitemaps.
 -   [`sphinxcontrib.httpdomain`](https://sphinxcontrib-httpdomain.readthedocs.io/en/stable/) provides a Sphinx domain for describing HTTP APIs.
-    It is used by Plone's {doc}`plone.restapi/docs/source/index`.
+    It is used by Plone's {doc}`/plone.restapi/docs/source/index`.
 -   [`sphinxcontrib.httpexample`](https://sphinxcontrib-httpexample.readthedocs.io/en/latest/) enhances `sphinxcontrib-httpdomain` by generating RESTful HTTP API call examples for different tools from a single HTTP request example.
     Supported tools include [curl](https://curl.se/), [wget](https://www.gnu.org/software/wget/), [httpie](https://httpie.io/), and [python-requests](https://requests.readthedocs.io/en/latest/).
-    It is used by Plone's {doc}`plone.restapi/docs/source/index`.
+    It is used by Plone's {doc}`/plone.restapi/docs/source/index`.
 -   [`sphinxcontrib.video`](https://pypi.org/project/sphinxcontrib-video/) allows you to embed local videos as defined by the HTML5 standard.
 -   [`sphinxext.opengraph`](https://pypi.org/project/sphinxext-opengraph/) generates [OpenGraph metadata](https://ogp.me/).

docs/contributing/index.md

@@ -165,7 +165,7 @@ Plone API
 
 Plone REST API
 :   A RESTful API for Plone.
-    See {doc}`plone.restapi/docs/source/contributing/index`.
+    See {doc}`/plone.restapi/docs/source/contributing/index`.
 
 Volto
 :   Plone 6 default frontend.

docs/install/manage-add-ons-packages.md

@@ -50,7 +50,7 @@ For a complete list of features, usage, and options, read [`cookiecutter-zope-in
 
 This section describes how to manage packages for the Plone backend with `mxdev`.
 
-For developing add-ons for the Plone frontend, Volto, see {doc}`volto/addons/index`.
+For developing add-ons for the Plone frontend, Volto, see {doc}`/volto/addons/index`.
 
 
 (manage-the-problem-with-pip-label)=