fixup comment

Author: lobsterkatie

packages/core/src/request.ts

@@ -68,8 +68,9 @@ export function eventToSentryRequest(event: Event, api: APIDetails): SentryReque
   delete event.sdkProcessingMetadata;
 
   // This is a temporary hack in order to debug a serialization error - see
-  // https://github.com/getsentry/sentry-javascript/issues/2809. TL;DR: even though we normalize all events, something
-  // is causing `JSON.stringify` to throw a circular reference error.
+  // https://github.com/getsentry/sentry-javascript/issues/2809 and
+  // https://github.com/getsentry/sentry-javascript/pull/4425. TL;DR: even though we normalize all events (which should
+  // prevent this), something is causing `JSON.stringify` to throw a circular reference error.
   const withSDKInfo = sdkInfo ? enhanceEventWithSdkInfo(event, api.metadata.sdk) : event;
   let body;
   try {