Add plural name for CustomResources example

[nikhita]

What this PR does / why we need it: Adds plural name for CustomResources example.

There is no field called name for CustomResources. Instead it is plural. This will also fail validation (https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/kube-apiextensions-server/pkg/apis/apiextensions/validation/validation.go#L33) while executing the instructions mentioned here: #45510.

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

Special notes for your reviewer:

Release note:

NONE

@sttts

[k8s-ci-robot]

Hi @nikhita. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with @k8s-bot ok to test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[sttts]

@k8s-bot ok to test

[sttts]

/lgtm
/approve

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nikhita, sttts

Needs approval from an approver in each of these OWNERS Files:

• staging/src/k8s.io/kube-apiextensions-server/OWNERS [sttts]

You can indicate your approval by writing /approve in a comment
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[k8s-ci-robot]

@nikhita: The following test(s) failed:

Test name	Commit	Details	Rerun command
pull-kubernetes-federation-e2e-gce	738c6f0	link	@k8s-bot pull-kubernetes-federation-e2e-gce test this

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[k8s-github-robot]

Automatic merge from submit-queue