There are a few coding style exclusions that should be fixed in ProofreadPage:
[x] MediaWiki.Commenting.FunctionComment.MissingDocumentationPrivate
[x] MediaWiki.Commenting.FunctionComment.MissingDocumentationProtected
[ ] MediaWiki.Commenting.FunctionComment.MissingDocumentationPublic
[x] MediaWiki.Commenting.FunctionComment.MissingParamTag
[x] MediaWiki.Commenting.FunctionComment.MissingReturn
[x] MediaWiki.Files.ClassMatchesFilename.NotMatch
[x] MediaWiki.WhiteSpace.SpaceBeforeSingleLineComment.NewLineComment
[x] PSR12.Properties.ConstantVisibility.NotFound
For each exclusion, remove it from `.phpcs.xml` and fix the code accordingly so that `./vendor/bin/phpcs` runs without error. Each should be submitted as a separate patch to make it easier to review.
**Getting Started Resources**
* Extension:Proofread_Page https://www.mediawiki.org/wiki/Extension:Proofread_Page (code repository is linked here too!).
* Tutorial on how to use Git, Gerrit and submit a patch https://www.mediawiki.org/wiki/Gerrit/Tutorial
* Tutorial on how to contribute to MediaWiki code and extensions https://www.mediawiki.org/wiki/How_to_become_a_MediaWiki_hacker