KEP-2862: Graduate to BETA.

Author: vinayakankugoyal

content/en/docs/reference/command-line-tools-reference/feature-gates/KubeletFineGrainedAuthz.md

@@ -9,6 +9,10 @@ stages:
   - stage: alpha 
     defaultValue: false
     fromVersion: "1.32"
+    toVersion: "1.32"
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.33"
 ---
 Enable [fine-grained authorization](/docs/reference/access-authn-authz/kubelet-authn-authz/#fine-grained-authorization) 
 for the kubelet's HTTP(s) API.