Merge pull request grafana#5340 from hailthemelody/master

update pricing to include 1 million free API requests per month

Author: bergquist

docs/sources/datasources/cloudwatch.md

@@ -97,8 +97,8 @@ Example `ec2_instance_attribute()` query
 
 ## Cost
 
-It's worth to mention that Amazon will charge you for CloudWatch API usage. CloudWatch costs
-$0.01 per 1,000 GetMetricStatistics or ListMetrics requests. For each query Grafana will
+Amazon provides 1 million CloudWatch API requests each month at no additional charge. Past this,
+it costs $0.01 per 1,000 GetMetricStatistics or ListMetrics requests. For each query Grafana will
 issue a GetMetricStatistics request and every time you pick a dimension in the query editor
 Grafana will issue a ListMetrics request.