message: Fix spelling error in map_fn documentation.
diff: @@ -239,7 +239,7 @@ def map_fn(fn,
  [2, 3, 4]], dtype=int32)>
  In some cases, `tf.vectorized_map` can be used to automatically convert a
  - function to a vectorized eqivalent.
  + function to a vectorized equivalent.
  #### Eager execution
  