Merge branch...

Merge branch '10562-document-that-incident-management-issue-creation-is-behind-a-feature-flag-for-11-9' into 'master'

Resolve "Document that Incident Management issue creation is behind a Feature Flag for 11.9"

Closes #10562

See merge request gitlab-org/gitlab-ee!10330

doc/user/project/integrations/prometheus.md

@@ -170,7 +170,7 @@ Once enabled, an issue will be opened automatically when an alert is triggered.
 
 If the metric exceeds the threshold of the alert for over 5 minutes, an email will be sent to all [Maintainers and Owners](../../permissions.md#project-members-permissions) of the project.
 
-NOTE: **Note:**
+**Note:**
 If you are running a self-managed instance, the new interface shown on
 this page will not be available unless the feature flag
 `incident_management` is enabled, which can be done from the Rails console by