changelog: adds note about closing #10925

CHANGELOG.md

@@ -7,6 +7,7 @@
 
 ### Minor
 * **OpsGenie**: Add triggered alerts as description [#11046](https://github.com/grafana/grafana/pull/11046), thx [@llamashoes](https://github.com/llamashoes)
+* **Cloudwatch**: Support high resolution metrics [#10925](https://github.com/grafana/grafana/pull/10925), thx [@mtanda](https://github.com/mtanda)
 
 # 5.0.1 (2018-03-08)