Merge pull request kubernetes#44428 from qiujian16/commenttypo

Automatic merge from submit-queue

Fix some typo of comment in kubelet.go

**What this PR does / why we need it**:
The PR is to fix some typo in kubelet.go

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
N/A

**Special notes for your reviewer**:

**Release note**:

```release-note
```

Author: Kubernetes Submit Queue

pkg/kubelet/kubelet.go

@@ -1396,12 +1396,12 @@ func (kl *Kubelet) syncPod(o syncPodOptions) error {
 	}
 
 	// Create Cgroups for the pod and apply resource parameters
-	// to them if cgroup-per-qos flag is enabled.
+	// to them if cgroups-per-qos flag is enabled.
 	pcm := kl.containerManager.NewPodContainerManager()
 	// If pod has already been terminated then we need not create
 	// or update the pod's cgroup
 	if !kl.podIsTerminated(pod) {
-		// When the kubelet is restarted with the cgroup-per-qos
+		// When the kubelet is restarted with the cgroups-per-qos
 		// flag enabled, all the pod's running containers
 		// should be killed intermittently and brought back up
 		// under the qos cgroup hierarchy.