message: Added usage example for random_hue
diff: @@ -1946,6 +1946,14 @@ def random_hue(image, max_delta, seed=None):
  `max_delta` must be in the interval `[0, 0.5]`.
  + Usage Example:
  + ```python
  + >>> x = tf.constant([[[2.0, 4.0, 3.0]]])
  + >>> y = tf.image.random_hue(x, max_delta=0.5)
  + >>> print(y.numpy())
  + [[[2.2600288 2. 4. ]]]
  + ```
  +
  Args:
  image: RGB image or images. The size of the last dimension must be 3.
  max_delta: float. The maximum value for the random delta.
  