Merge branch 'sengelhard-fix-reference-to-label' into 'master'

Update reference to ~Monitoring to be ~Monitor

See merge request gitlab-org/gitlab-ce!24489

Author: axilleas

doc/development/contributing/issue_workflow.md

@@ -67,7 +67,7 @@ The current team labels are:
 - ~Geo
 - ~Gitaly
 - ~Manage
-- ~Monitoring
+- ~Monitor
 - ~Plan
 - ~Quality
 - ~Release