changelog: make prom fixes more explicit

CHANGELOG.md

@@ -30,11 +30,15 @@
 
 # 4.6.2 (unreleased)
 
+# Important
+* **Prometheus**: Fixes bug with new prometheus alerts in Grafana. Make sure to download this version if your using Prometheus for alerting. More details in the issue. [#9777](https://github.com/grafana/grafana/issues/9777)
+
+# Fixes
 * **Color picker**: Bug after using textbox input field to change/paste color string [#9769](https://github.com/grafana/grafana/issues/9769)
 * **Cloudwatch**: Fix for cloudwatch templating query `ec2_instance_attribute` [#9667](https://github.com/grafana/grafana/issues/9667), thanks [@mtanda](https://github.com/mtanda)
 * **Heatmap**: Fixed tooltip for "time series buckets" mode [#9332](https://github.com/grafana/grafana/issues/9332)
 * **InfluxDB**: Fixed query editor issue when using `>` or `<` operators in WHERE clause [#9871](https://github.com/grafana/grafana/issues/9871)
-* **Prometheus**: Fixes bug with new prometheus alerts [#9777](https://github.com/grafana/grafana/issues/9777)
+
 
 # 4.6.1 (2017-11-01)