message: Fix parameter and typos.
diff: @@ -359,7 +359,7 @@ def checkpoint_exists_internal(checkpoint_prefix):
  `tf.train.latest_checkpoint()`, regardless of sharded/non-sharded or
  V1/V2.
  Returns:
  - A bool, true iff a checkpoint referred to by `checkpoint_prefix` exists.
  + A bool, true if a checkpoint referred to by `checkpoint_prefix` exists.
  """
  pathname = _prefix_to_checkpoint_path(checkpoint_prefix,
  saver_pb2.SaverDef.V2)
  @@ -387,9 +387,9 @@ def checkpoint_exists(checkpoint_prefix):
  `tf.train.latest_checkpoint()`, regardless of sharded/non-sharded or
  V1/V2.
  Returns:
  - A bool, true iff a checkpoint referred to by `checkpoint_prefix` exists.
  + A bool, true if a checkpoint referred to by `checkpoint_prefix` exists.
  """
  - return checkpoint_exists_internal(checkpoint_exists)
  + return checkpoint_exists_internal(checkpoint_prefix)
  @deprecation.deprecated(
  