🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

google/cloud/container_v1beta1/types/cluster_service.py

@@ -2587,7 +2587,15 @@ class Cluster(proto.Message):
         shielded_nodes (google.cloud.container_v1beta1.types.ShieldedNodes):
             Shielded Nodes configuration.
         release_channel (google.cloud.container_v1beta1.types.ReleaseChannel):
-            Release channel configuration.
+            Release channel configuration. If left
+            unspecified on cluster creation and a version is
+            specified, the cluster is enrolled in the most
+            mature release channel where the version is
+            available (first checking STABLE, then REGULAR,
+            and finally RAPID). Otherwise, if no release
+            channel configuration and no version is
+            specified, the cluster is enrolled in the
+            REGULAR channel with its default version.
         workload_identity_config (google.cloud.container_v1beta1.types.WorkloadIdentityConfig):
             Configuration for the use of Kubernetes
             Service Accounts in GCP IAM policies.
@@ -3800,13 +3808,11 @@ class Operation(proto.Message):
 
             -
 
-            ``https://container.googleapis.com/v1beta1/projects/123/locations/us-central1/clusters/my-cluster``
-            ---------------------------------------------------------------------------------------------------
+            ``https://container.googleapis.com/v1/projects/123/locations/us-central1/clusters/my-cluster``
 
-            ``https://container.googleapis.com/v1beta1/projects/123/zones/us-central1-c/clusters/my-cluster/nodePools/my-np``
-            -----------------------------------------------------------------------------------------------------------------
+            ``https://container.googleapis.com/v1/projects/123/zones/us-central1-c/clusters/my-cluster/nodePools/my-np``
 
-            ``https://container.googleapis.com/v1beta1/projects/123/zones/us-central1-c/clusters/my-cluster/nodePools/my-np/node/my-node``
+            ``https://container.googleapis.com/v1/projects/123/zones/us-central1-c/clusters/my-cluster/nodePools/my-np/node/my-node``
         location (str):
             [Output only] The name of the Google Compute Engine
             `zone <https://cloud.google.com/compute/docs/regions-zones/regions-zones#available>`__