message: Typo fix in strategy_combinations.py
diff: @@ -159,13 +159,13 @@ central_storage_strategy_with_gpu_and_cpu = combinations.NamedDistribution(
  ["/gpu:0", "/cpu:0"]),
  required_gpus=1)
  multi_worker_mirrored_two_workers = combinations.NamedDistribution(
  - "MultiWorkerMirrroedTwoWorkers",
  + "MultiWorkerMirroredTwoWorkers",
  collective_all_reduce_strategy.CollectiveAllReduceStrategy,
  has_chief=False,
  num_workers=2,
  )
  multi_worker_mirrored_one_chief_one_worker = combinations.NamedDistribution(
  - "MultiWorkerMirrroedOneChiefOneWorker",
  + "MultiWorkerMirroredOneChiefOneWorker",
  collective_all_reduce_strategy.CollectiveAllReduceStrategy,
  has_chief=True,
  num_workers=1,
  