Fixes UI text in bold

doc/user/project/merge_requests/work_in_progress_merge_requests.md

@@ -39,7 +39,7 @@ There are several ways to flag a merge request as a Draft:
 Similar to above, when a Merge Request is ready to be merged, you can remove the
 `Draft` flag in several ways:
 
-- Click the "Mark as ready" button on the top-right corner of the merge request's page.
+- Click the **Mark as ready** button on the top-right corner of the merge request's page.
 - Remove `[Draft]`, `Draft:` or `(Draft)` from the start of the merge request's title. Clicking on
   **Remove the Draft: prefix from the title**, under the title box, when editing the merge
   request's description, will have the same effect.