More accurate language in comment

pkg/source/pubsub/pubsub_source.go

@@ -135,7 +135,7 @@ func newPubSubSource(concurrentWrites int, projectID string, subscriptionID stri
 		return nil, errors.Wrap(err, "Failed to create PubSub client")
 	}
 
-	// This temproary logic allows us to fix the bug without a breaking release.
+	// This temproary logic allows us to fix suboptimal behaviour without a breaking release.
 	// The order of priority is streaming_pull_goroutines > concurrent_writes > previous default
 	// We don't change the default becuase this would cause a major behaviour change in a non-major version bump