message: Fix typo in ValueError string.
diff: @@ -614,7 +614,7 @@ class Estimator(object):
  if isinstance(result, (list, tuple)):
  if len(result) != 2:
  raise ValueError(
  - 'input_fn should return (feautures, labels) as a len 2 tuple.')
  + 'input_fn should return (features, labels) as a len 2 tuple.')
  return result[0], result[1], input_hooks
  return result, None, input_hooks
  