message: Update wrappers.py
  Name of the keyword argument coorected.
diff: @@ -407,7 +407,7 @@ class Bidirectional(Wrapper):
  automatically.
  Note that the provided `backward_layer` layer should have properties
  matching those of the `layer` argument, in particular it should have the
  - same values for `stateful`, `return_states`, `return_sequence`, etc.
  + same values for `stateful`, `return_states`, `return_sequences`, etc.
  In addition, `backward_layer` and `layer` should have different
  `go_backwards` argument values.
  A `ValueError` will be raised if these requirements are not met.
  