message: [NFC] Add examples to tf.nest.map_structure documentation
diff: @@ -587,6 +587,21 @@ def map_structure(func, *structure, **kwargs):
  `structure[i]`. All structures in `structure` must have the same arity,
  and the return value will contain results with the same structure layout.
  + Examples:
  +
  + 1. A single Python dict:
  +
  + >>> a = {"hello": 24, "world": 76}
  + >>> tf.nest.map_structure(lambda p: p * 2, a)
  + {'hello': 48, 'world': 152}
  +
  + 2. Multiple Python dictionaries:
  +
  + >>> d1 = {"hello": 24, "world": 76}
  + >>> d2 = {"hello": 36, "world": 14}
  + >>> tf.nest.map_structure(lambda p1, p2: p1 + p2, d1, d2)
  + {'hello': 60, 'world': 90}
  +
  Args:
  func: A callable that accepts as many arguments as there are structures.
  *structure: scalar, or tuple or dict or list of constructed scalars and/or
  