Merge branch 'msedlakjakubowski-master-patch-04973' into 'master'

Fix a doc heading level

See merge request gitlab-org/gitlab!65983

doc/user/group/iterations/index.md

@@ -65,7 +65,7 @@ To create an iteration cadence:
 1. Select **New iteration cadence**.
 1. Fill out required fields, and select **Create iteration cadence**. The cadence list page opens.
 
-## Delete an iteration cadence
+### Delete an iteration cadence
 
 Prerequisites: