GitLab self-monitoring removal - 16.0

doc/administration/monitoring/gitlab_self_monitoring_project/index.md

@@ -8,7 +8,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/32351) in GitLab 12.7 [with a flag](../../feature_flags.md) named `self_monitoring_project`. Disabled by default.
 > - Generally available in GitLab 12.8. [Feature flag `self_monitoring_project`](https://gitlab.com/gitlab-org/gitlab/-/issues/198511) removed.
-> - [Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/348909) in GitLab 14.9. Planned for removal in GitLab 15.0.
+> - [Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/348909) in GitLab 14.9. Planned for removal in GitLab 16.0.
 
 WARNING:
 This feature is in its end-of-life process. It is [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/348909)