Merge branch 'docs-rename-release-group-labels' into 'master'

Rename Release groups in issue_workflow.md

See merge request gitlab-org/gitlab-ce!30293

doc/development/contributing/issue_workflow.md

@@ -154,8 +154,8 @@ The current group labels are:
 * ~"group::ci and runner" 
 * ~"group::testing" 
 * ~"group::package" 
-* ~"group::core release" 
-* ~"group::supporting capabilities" 
+* ~"group::progressive delivery" 
+* ~"group::release management" 
 * ~"group::autodevops and kubernetes" 
 * ~"group::serverless and paas"
 * ~"group::apm"