message: minor typo in `make_callable` method.
diff: @@ -1132,7 +1132,7 @@ class BaseSession(SessionInterface):
  for details of the allowable fetch types.
  feed_list: (Optional.) A list of `feed_dict` keys. See
  `tf.Session.run` for details of the allowable feed key types.
  - accept_options: (Optional.) Iff `True`, the returned `Callable` will be
  + accept_options: (Optional.) If `True`, the returned `Callable` will be
  able to accept `tf.RunOptions` and `tf.RunMetadata` as optional
  keyword arguments `options` and `run_metadata`, respectively, with
  the same syntax and semantics as `tf.Session.run`, which is useful
  