Updated feature gate name

Author: cici37

keps/sig-api-machinery/3488-cel-admission-control/README.md

@@ -2057,7 +2057,7 @@ well as the [existing list] of feature gates.
 -->
 
 - [ ] Feature gate (also fill in values in `kep.yaml`)
-  - Feature gate name: CelValidatingAdmissionExtensibility
+  - Feature gate name: CELValidatingAdmission
   - Components depending on the feature gate: kube-apiserver
 - [ ] Other
   - Describe the mechanism:

keps/sig-api-machinery/3488-cel-admission-control/kep.yaml

@@ -48,7 +48,7 @@ milestone:
 # The following PRR answers are required at alpha release
 # List the feature gate name and the components for which it must be enabled
 feature-gates:
-  - name: CelValidatingAdmissionExtensibility
+  - name: CELValidatingAdmission
     components:
       - kube-apiserver
 disable-supported: true