Merge branch '245331-alerts-integrations-docs' into 'master'

Alert integrations list docs

See merge request gitlab-org/gitlab!45000

doc/operations/incident_management/index.md

@@ -58,3 +58,4 @@ For information about GitLab and incident management, see:
 - [Alert details](alert_details.md)
 - [Incidents](incidents.md)
 - [Status page](status_page.md)
+- [Integrations](integrations.md)

doc/operations/incident_management/integrations.md

+---
+stage: Monitor
+group: Health
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
+# Integrations
+
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/13203) in [GitLab Core](https://about.gitlab.com/pricing/) 12.5.
+
+With Maintainer or higher [permissions](../../user/permissions.md), you can view
+the list of configured alerts integrations by navigating to
+**Settings > Operations** in your project's sidebar menu, and expanding **Alerts** section.
+The list displays the integration name, type, and status (enabled or disabled):
+
+![Current Integrations](img/integrations_list_v13_5.png)