fix function notes

pkg/kubelet/volumemanager/cache/actual_state_of_world.go

@@ -55,7 +55,7 @@ type ActualStateOfWorld interface {
 	// indicating the specified volume has been successfully mounted to the
 	// specified pod.
 	// If a pod with the same unique name already exists under the specified
-	// volume, this is a no-op.
+	// volume, reset the pod's remountRequired value.
 	// If a volume with the name volumeName does not exist in the list of
 	// attached volumes, an error is returned.
 	AddPodToVolume(podName volumetypes.UniquePodName, podUID types.UID, volumeName v1.UniqueVolumeName, mounter volume.Mounter, outerVolumeSpecName string, volumeGidValue string) error