Merge branch 'docs-metadata-add-ra-trouble' into 'master'

Docs: Update RA troubleshooting page with metadata

See merge request gitlab-org/gitlab!38506

doc/administration/reference_architectures/troubleshooting.md

+---
+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/#designated-technical-writers
+---
+
 # Troubleshooting a reference architecture setup
 
 This page serves as the troubleshooting documentation if you followed one of