Merge branch 'update-monitoring-gitlab' into 'master'

Update Monitoring GitLab with Prometheus to Distribution

See merge request gitlab-org/gitlab!77516

doc/administration/monitoring/prometheus/index.md

 ---
-stage: Monitor
-group: Monitor
+stage: Enablement
+group: Distribution
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---