Added note on removed resolving individual comments

doc/user/discussions/index.md

@@ -38,18 +38,19 @@ There is a limit of 5,000 comments for every object, for example: issue, epic, a
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/5022) in GitLab 8.11.
 > - Resolvable threads can be added only to merge request diffs.
+> - Resolving comments individually was [removed](https://gitlab.com/gitlab-org/gitlab/-/issues/28750) in GitLab 13.6.
 
 Thread resolution helps keep track of progress during planning or code review.
 
-Every standard comment or thread in merge requests, commits, commit diffs, and
+Every thread in merge requests, commits, commit diffs, and
 snippets is initially displayed as unresolved. They can then be individually resolved by anyone
 with at least Developer access to the project or by the author of the change being reviewed.
 If the thread has been resolved and a non-member un-resolves their own response,
 this will also unresolve the discussion thread.
 If the non-member then resolves this same response, this will resolve the discussion thread.
 
-The need to resolve all standard comments or threads prevents you from forgetting
-to address feedback and lets you hide threads that are no longer relevant.
+The need to resolve threads prevents you from forgetting to address feedback and lets you
+hide threads that are no longer relevant.
 
 !["A thread between two people on a piece of code"](img/thread_view.png)