Automatic merge from submit-queue (batch tested with PRs 61147, 62236, 62018). 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>.

spec.SchedulerName should be spec.schedulerName in kube-scheduler help

**What this PR does / why we need it**:
spec.SchedulerName should be spec.schedulerName in kube-scheduler help
```shell
--scheduler-name string                  Name of the scheduler, used to select which pods will be processed by this scheduler, based on pod's "spec.SchedulerName". (default "default-scheduler")
```


**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```