Is the current group (about.k8s.io) for clusterproperty API accurate?

[mikeshng]

The clusterproperty API group is currently defined as group: about.k8s.io
https://github.com/kubernetes-sigs/about-api/blob/master/clusterproperty/config/crd/bases/about.k8s.io_clusterproperties.yaml#L10

But as stated in KEP k8s.io group protection https://github.com/kubernetes/enhancements/blob/master/keps/sig-api-machinery/2337-k8s.io-group-protection/README.md
This group should be protected unless there is an annotation with the PR attached.
The current kustomize patch annotation points to a not related API (default template value?): https://github.com/kubernetes/kubernetes/pull/78458
https://github.com/kubernetes-sigs/about-api/blob/master/clusterproperty/config/crd/patches/annotation_for_clusterproperties.yaml#L6

Should the clusterproperty API group be x-k8s.io instead?

[lauralorenz]

about.k8s.io is correct, but the patch annotation is the wrong link. Our API approval PR is kubernetes/enhancements#3084