docs(): updated changelog

CHANGELOG.md

@@ -17,6 +17,7 @@
 * **Timepicker**: Fixed issue with timepicker and UTC when reading time from URL, fixes [#5078](https://github.com/grafana/grafana/issues/5078)
 * **Docs**: Added docs for org & user preferences HTTP API, closes [#5069](https://github.com/grafana/grafana/issues/5069)
 * **Plugin list panel**: Now shows correct enable state for apps when not enabled, fixes [#5068](https://github.com/grafana/grafana/issues/5068)
+* **Elasticsearch**: Templating & Annotation queries that use template variables are now formatted correctly, fixes [#5135](https://github.com/grafana/grafana/issues/5135)
 
 # 3.0.2 Patch release (2016-05-16)