Merge branch 'docs-aqualls-repair-metadata' into 'master'

Reassign page to Health group

See merge request gitlab-org/gitlab!45597

doc/administration/monitoring/gitlab_self_monitoring_project/index.md

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 stage: Monitor
-group: APM
+group: Health
 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/#designated-technical-writers
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