docs(changelog): add note about closing #5443

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### Bugfixes
 * **API**: HTTP API for deleting org returning incorrect message for a non-existing org [#6679](https://github.com/grafana/grafana/issues/6679)
+* **Dashboard**: Posting empty dashboard result in corrupted dashboard [#5443](https://github.com/grafana/grafana/issues/5443)
 
 ### Enhancements