Merge branch 'docs-prometheus-service-discovery' into 'master'
Documentation for Prometheus Service Discovery Closes #63110 See merge request gitlab-org/gitlab-ce!29811 (cherry picked from commit 46640168) 95525a56 Adding documentation for Prometheus Service Discovery 781d05af Moved monitoring to its own step f6c0fd2e Adding monitoring to number list in Redis db2f83f3 Updates based on review 1105b8ea A couple of missed adjustments