label kubernetes.io/role is not mentioned in well-knwon labels while used in kubectl for display

**This is a Bug Report**

**Problem:**

As titled. `kubectl get node -owide` and `kubectl describe node` shows Role with reads label.

See https://github.com/kubernetes/kubernetes/blob/3361895612dac57044d5dacc029d2ace1865479c/pkg/printers/internalversion/printers.go#L1920
and https://github.com/kubernetes/kubernetes/blob/3361895612dac57044d5dacc029d2ace1865479c/staging/src/k8s.io/kubectl/pkg/describe/describe.go#L5543

**Proposed Solution:**
Mention it in doc. If it is a deprecated label, mention it is deprecated.

**Page to Update:**
https://kubernetes.io/docs/reference/labels-annotations-taints/