Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Update kubelet's 'pod-manifest-path' description
Improved grammer of flag `pod-manifest-path` of kubelet
**What this PR does / why we need it**:
It updates the flag description which had an extra `to`, so this commit removes it.
/approve no-issue
```release-note
NONE
```
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