fix(js): Change ReportingObserver description (#11414)

Author: s1gr1d

docs/platforms/javascript/common/configuration/integrations/reportingobserver.mdx

@@ -1,6 +1,6 @@
 ---
 title: ReportingObserver
-description: "Allows you to apply a transformation to each frame of the stack trace."
+description: "Captures the reports collected via the `ReportingObserver` interface and sends them to Sentry."
 notSupported:
   - javascript.node
   - javascript.aws-lambda
@@ -25,7 +25,7 @@ This integration only works inside a browser environment.
 
 _Import name: `Sentry.reportingObserverIntegration`_
 
-This integration hooks into the ReportingObserver API and sends captured events through to Sentry. It can be configured to handle specific issue types only.
+This integration hooks into the [Reporting API](https://developer.mozilla.org/en-US/docs/Web/API/Reporting_API) and sends captured events through to Sentry. It can be configured to handle specific issue types only.
 
 <PlatformContent includePath="configuration/reporting-observer" />