docs: add note about closing #6411

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 ### Enhancements
 * **Postgres**: Add support for Certs for Postgres database [#6655](https://github.com/grafana/grafana/issues/6655)
+* **Victorops**: Add VictorOps Notification Integration [#6411](https://github.com/grafana/grafana/issues/6411)
 
 # 4.0-stable (2016-11-29)