message: Update docstring as pow supports `float16` now
diff: @@ -430,10 +430,10 @@ def pow(x, y, name=None): # pylint: disable=redefined-builtin
  ```
  Args:
  - x: A `Tensor` of type `float32`, `float64`, `int32`, `int64`, `complex64`,
  - or `complex128`.
  - y: A `Tensor` of type `float32`, `float64`, `int32`, `int64`, `complex64`,
  - or `complex128`.
  + x: A `Tensor` of type `float16`, `float32`, `float64`, `int32`, `int64`,
  + `complex64`, or `complex128`.
  + y: A `Tensor` of type `float16`, `float32`, `float64`, `int32`, `int64`,
  + `complex64`, or `complex128`.
  name: A name for the operation (optional).
  Returns:
  