Fixes a minor documentation issue in the kubectl auth reference page

[SasiSriram]

What Was Incorrect:
The documentation currently uses the wording:
"Reconciles rules for RBAC Role, RoleBinding, ClusterRole, and ClusterRole binding objects."

This includes an incorrect reference to the Kubernetes RBAC resource ClusterRoleBinding (written incorrectly as "ClusterRole binding").

Fix Applied:
Corrected the terminology to use the proper Kubernetes resource name: "ClusterRoleBinding"