docs: [google-cloud-container] improve API documentation for Binary A…

…uthorization (#12049)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 584927082

Source-Link:
googleapis/googleapis@0be2364

Source-Link:
googleapis/googleapis-gen@3a1de01
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packages/google-cloud-container/google/cloud/container_v1beta1/types/cluster_service.py

@@ -2717,12 +2717,13 @@ class EvaluationMode(proto.Enum):
                 singleton policy. This is equivalent to setting
                 the enabled boolean to true.
             POLICY_BINDINGS (5):
-                Use Binary Authorization with the policies specified in
-                policy_bindings.
+                Use Binary Authorization Continuous Validation with the
+                policies specified in policy_bindings.
             POLICY_BINDINGS_AND_PROJECT_SINGLETON_POLICY_ENFORCE (6):
-                Use Binary Authorization with the policies specified in
-                policy_bindings, and also with the project's singleton
-                policy in enforcement mode.
+                Use Binary Authorization Continuous Validation with the
+                policies specified in policy_bindings and enforce Kubernetes
+                admission requests with Binary Authorization using the
+                project's singleton policy.
         """
         EVALUATION_MODE_UNSPECIFIED = 0
         DISABLED = 1