message: Fix typo in CentralStorageStrategy.
diff: @@ -2733,7 +2733,7 @@ def _minimize(strategy, tape, optimizer, loss, trainable_variables):
  # Whether to aggregate gradients outside of optimizer. This requires support
  # of the optimizer and doesn't work with ParameterServerStrategy and
  - # CentralStroageStrategy.
  + # CentralStorageStrategy.
  aggregate_grads_outside_optimizer = (
  optimizer._HAS_AGGREGATE_GRAD and # pylint: disable=protected-access
  not isinstance(strategy.extended,
  