Fix apiGroups in verify-1.22 example

[albert-zhong]

The example for the verifydeprecatedapi-1.22 constraint should say "scheduling.k8s.io" instead of "scheduling.k8s.io/v1beta1" for the apiGroup match kind. Otherwise, the constraint will not properly match the deprecated API resources.

What this PR does / why we need it:

Which issue(s) does this PR fix (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
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[nilekhc]

@albert-zhong Thanks for the PR. Could you resolve the DCO requirement from the Checks? https://github.com/open-policy-agent/gatekeeper-library/pull/415/checks?check_run_id=17536701222

Also please make changes in the following directory - https://github.com/open-policy-agent/gatekeeper-library/tree/master/library/general/verifydeprecatedapi. Website docs get auto-generated.

[albert-zhong]

@albert-zhong Thanks for the PR. Could you resolve the DCO requirement from the Checks? https://github.com/open-policy-agent/gatekeeper-library/pull/415/checks?check_run_id=17536701222

Also please make changes in the following directory - https://github.com/open-policy-agent/gatekeeper-library/tree/master/library/general/verifydeprecatedapi. Website docs get auto-generated.

Thanks! Will do - the fixed PR is here.