doc(plugins): typo

public/app/plugins/datasource/prometheus/README.md

@@ -1,7 +1,7 @@
-# CloudWatch Datasource -  Native Plugin
+# Prometheus Datasource -  Native Plugin
 
 Grafana ships with **built in** support for Prometheus, the open-source service monitoring system and time series database.
 
 Read more about it here:
 
-[http://docs.grafana.org/datasources/prometheus/](http://docs.grafana.org/datasources/prometheus/)
+[http://docs.grafana.org/datasources/prometheus/](http://docs.grafana.org/datasources/prometheus/)