reword readme

prometheus/README.md

@@ -27,9 +27,9 @@ There is also a couple of more advanced settings (ssl, labels joining, custom ta
 If you are monitoring an off-the-shelf software and you think it would deserve an official integration, have a look at `kube-proxy` for an example, and don't hesitate to contribute.
 
 Due to the nature of this integration, it is possible to submit a high number of custom metrics
-to Datadog. To prevent overage charges on configuration errors or input changes, the check
-limits itself to 2000 metric contexts (different metric name or different tags). You can
-increase this limit, if needed, by setting the `max_returned_metrics` option.
+to Datadog. To provide users control over the maximum number of metrics sent in the case of
+configuration errors or input changes, the check has a default limit of 2000 metrics.
+You can increase this limit, if needed, by setting the `max_returned_metrics` option.
 
 ### Validation