docs: updated changelog

CHANGELOG.md

@@ -10,7 +10,6 @@
 * **Prometheus**: Support table response formats (column per label) [#6140](https://github.com/grafana/grafana/issues/6140), thx [@mtanda](https://github.com/mtanda)
 * **Single Stat Panel**: support for non time series data [#6564](https://github.com/grafana/grafana/issues/6564)
 
-
 ## Minor Enchancements
 
 * **Prometheus**: Make Prometheus query field a textarea [#7663](https://github.com/grafana/grafana/issues/7663), thx [@hagen1778](https://github.com/hagen1778)
@@ -22,12 +21,16 @@
 * **Templating**: Data source variable now supports multi value and panel repeats [#7030](https://github.com/grafana/grafana/issues/7030) thx [@mtanda](https://github.com/mtanda)
 * **Telegram**: Telegram alert is not sending metric and legend. [#8110](https://github.com/grafana/grafana/issues/8110), thx [@bashgeek](https://github.com/bashgeek)
 * **Graph**: Support dashed lines [#514](https://github.com/grafana/grafana/issues/514), thx [@smalik03](https://github.com/smalik03)
+* **Table**: Support to change column header text [#3551](https://github.com/grafana/grafana/issues/3551)
 
 ## Fixes
 * **Table Panel**: Fixed annotation display in table panel, [#8023](https://github.com/grafana/grafana/issues/8023)
 * **Dashboard**: If refresh is blocked due to tab not visible, then refresh when it becomes visible [#8076](https://github.com/grafana/grafana/issues/8076) thanks [@SimenB](https://github.com/SimenB)
 * **Snapshots**: Fixed problem with annotations & snapshots [#7659](https://github.com/grafana/grafana/issues/7659)
 
+## Changes
+* **Elasticsearch**: Changed elasticsearch Terms aggregation to default to Min Doc Count to 1, and sort order to Top [#8321](https://github.com/grafana/grafana/issues/8321)
+
 # 4.2.0 (2017-03-22)
 ## Minor Enhancements
 * **Templates**: Prevent use of the prefix `__` for templates in web UI [#7678](https://github.com/grafana/grafana/issues/7678)