message: Update logging message for MultiWorkerMirroredStrategy.
diff: @@ -237,7 +237,7 @@ class CollectiveAllReduceExtended(mirrored_strategy.MirroredExtended):
  self._rpc_layer = cluster_resolver.rpc_layer
  self._warn_nccl_no_gpu()
  - logging.info("Single-worker CollectiveAllReduceStrategy with local_devices "
  + logging.info("Single-worker MultiWorkerMirroredStrategy with local_devices "
  "= %r, communication = %s", local_devices, self._communication)
  def _initialize_multi_worker(self, cluster_resolver):
  @@ -339,8 +339,8 @@ class CollectiveAllReduceExtended(mirrored_strategy.MirroredExtended):
  self._warn_nccl_no_gpu()
  logging.info(
  - "Multi-worker CollectiveAllReduceStrategy with cluster_spec = %r, "
  - "task_type = %r, task_id = %r, num_workers = %r, local_devices = %r, "
  + "MultiWorkerMirroredStrategy with cluster_spec = %r, task_type = %r, "
  + "task_id = %r, num_workers = %r, local_devices = %r, "
  "communication = %s", cluster_spec.as_dict(), task_type,
  task_id, self._num_workers, local_devices,
  self._communication)
  