Revert "Revert "Update code quality documentation""
What does this MR do?
What are the relevant issue numbers?
Does this MR meet the acceptance criteria?
- N/A Changelog entry added, if necessary
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Documentation created/updated - N/A Tests added for this feature/bug
- N/A Conforms to the code review guidelines
- N/A Conforms to the merge request performance guidelines
- N/A Conforms to the style guides
- N/A Conforms to the database guides
- N/A EE specific content should be in the top level
/eefolder - N/A For a paid feature, have we considered GitLab.com plans, how it works for groups, and is there a design for promoting it to users who aren't on the correct plan?