fix a syntax error in a comment

cmd/kubelet/app/server.go

@@ -221,7 +221,7 @@ func initConfigz(kc *kubeletconfiginternal.KubeletConfiguration) error {
 	return nil
 }
 
-// makeEventRecorder sets up kubeDeps.Recorder if its nil. Its a no-op otherwise.
+// makeEventRecorder sets up kubeDeps.Recorder if it's nil. It's a no-op otherwise.
 func makeEventRecorder(kubeDeps *kubelet.Dependencies, nodeName types.NodeName) {
 	if kubeDeps.Recorder != nil {
 		return