fix typo in name of exclude option

In the sample line the option was listed correctly but in the expansion where each line was described on its own, the option was named incorrectly.

Replaces --excluded with --exclude in the README under Usage.

Author: krugerk

README.md

@@ -42,7 +42,7 @@ The syntax is:
 
 -   `--source` is the path to the folder that contains the main Xcode project or Workspace
 -   `--artifacts` path to the folder that will contain the generated `output.json` report
--   `--excluded` (optional) space separated list of path substrings to exclude from analysis (e.g. `Tests` will ignore all files/folders that contain `Tests`)
+-   `--exclude` (optional) space separated list of path substrings to exclude from analysis (e.g. `Tests` will ignore all files/folders that contain `Tests`)
 -   `--tests-paths` (default: `Test Tests`) space separated list of path substrings matching test classes
 -   `--generate-graphs` (optional) if passed, it will generate the graphs related to the analysis and save them in the artifacts folder