Merge branch 'pl-status-page-doc-confidential' into 'master'

Mention confidential issues in Status Page docs

See merge request gitlab-org/gitlab!29687

doc/user/project/status_page/index.md

@@ -78,10 +78,16 @@ To publish an Incident, you first need to create an issue in the Project you ena
 
 Once this issue is created, a background worker will publish the issue onto the status page using the credentials you provided during setup.
 
+NOTE: **Note:**
+Confidential issues are not published. If a published issue is made confidential it will be unpublished.
+
 ### Publishing updates
 
 To publish an update to the Incident, update the incident issue's description.
 
+CAUTION: **Caution:**
+When referenced issues are changed (e.g. title, confidentiality) the incident they were referenced in are not updated automatically.
+
 ### Adding comments
 
 To add comments to the Status Page Incident, create a comment on the incident issue.