message: fix the parameter usage
diff: @@ -724,7 +724,8 @@ class ZeroPaddingTest(keras_parameterized.TestCase):
  keras.layers.ZeroPadding2D(padding=None)
  @parameterized.named_parameters(
  - ('channels_first', 'channels_last'),
  + ('channels_first', 'channels_first'),
  + ('channels_last', 'channels_last')
  )
  def test_zero_padding_3d(self, data_format):
  num_samples = 2
  