message: Correction in keras.layers.Reshape
  Here is the GitHub [gist](https://colab.sandbox.google.com/gist/jvishnuvardhan/0609804e9d2f18453b6eae1dba1d8284/reshape_error.ipynb). I tried TF1.13.1 also and has same output. Thanks
diff: @@ -400,7 +400,7 @@ class Reshape(Layer):
  # also supports shape inference using `-1` as dimension
  model.add(Reshape((-1, 2, 2)))
  - # now: model.output_shape == (None, 3, 2, 2)
  + # now: model.output_shape == (None, None, 2, 2)
  ```
  """
  