Merge branch 'docs-sentry-fix-metadata' into 'master'

Correct page metadata

See merge request gitlab-org/gitlab!68286

doc/user/infrastructure/clusters/manage/management_project_applications/sentry.md

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 stage: Monitor
-group: Health
+group: Monitor
 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
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