Follow-up from "Introduce new detailed_merge_status to the merge_requests REST API"

The following discussion from !101724 (merged) should be addressed:

• @dskim_gitlab started a discussion: (+8 comments)

  @dskim_gitlab I've left you one (small!) suggestion about capitalization. Would you make me a follow-up when this work is ready to merge? I think the docs need more work, but I do not want to block your feature.

  For my own notes, in the follow-up, I should:

  • Shift data into table format
  • Check inbound crosslinks to section, update links accordingly
  • Discuss with David the effects on items like
    • the Merge requests list response notes subheading on this page
    • the with_merge_status_recheck field
    • the other items in the Single merge request response notes subheading