message: Minor typo fix in docstring: added arg to call
diff: @@ -95,7 +95,7 @@ def convert_nonref_to_tensor(value, dtype=None, dtype_hint=None, name=None):
  y = convert_nonref_to_tensor(x)
  x is y
  # ==> True
  - tf.is_tensor
  + tf.is_tensor(y)
  # ==> False
  tf.equal(y, 13.37)
  # ==> True
  