Remove duplicate feature text and make linting fixes
What does this MR do?
Removes an almost duplicate line of text, fixes some markdown issues, and fixes an accidental breaking of a list item.
Related issues
Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/8936.
Author's checklist
Review checklist
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Your team's review (required) -
PM's review (recommended, but not a blocker) -
Technical writer's review (required) -
Merge the EE-MR first, CE-MR afterwards