message: Fix typo in checkpoint_management documentation.
diff: @@ -667,7 +667,7 @@ class CheckpointManager(object):
  Returns:
  The path to the new checkpoint. It is also recorded in the `checkpoints`
  - and `latest_checkpoint` properies.
  + and `latest_checkpoint` properties.
  """
  # Save counter logic duplicated from tf.train.Checkpoint, soon to diverge
  # slightly with a custom numbering option.
  