message: add empty line after Usage Example
diff: @@ -4046,6 +4046,7 @@ def draw_bounding_boxes_v2(images, boxes, colors, name=None):
  A `Tensor`. Has the same type as `images`.
  Usage Example:
  +
  >>> # create an empty image
  >>> img = tf.zeros([1, 3, 3, 3])
  >>> # draw a box around the image
  @@ -4099,14 +4100,27 @@ def draw_bounding_boxes(images, boxes, name=None, colors=None):
  A `Tensor`. Has the same type as `images`.
  Usage Example:
  - >>> # create a random image
  - >>> img = tf.random.normal([1, 128, 128, 3])
  - >>> # draw a box in the center of the image
  - >>> box = np.array([0.25, 0.25, 0.75, 0.75])
  +
  + >>> # create an empty image
  + >>> img = tf.zeros([1, 3, 3, 3])
  + >>> # draw a box around the image
  + >>> box = np.array([0, 0, 1, 1])
  >>> boxes = box.reshape([1, 1, 4])
  >>> # alternate between red and blue
  >>> colors = np.array([[1.0, 0.0, 0.0], [0.0, 0.0, 1.0]])
  - >>> boxed_image = tf.image.draw_bounding_boxes(img, boxes, colors)
  + >>> tf.image.draw_bounding_boxes(img, boxes, colors)
  + <tf.Tensor: shape=(1, 3, 3, 3), dtype=float32, numpy=
  + array([[[[1., 0., 0.],
  + [1., 0., 0.],
  + [1., 0., 0.]],
  +
  + [[1., 0., 0.],
  + [0., 0., 0.],
  + [1., 0., 0.]],
  +
  + [[1., 0., 0.],
  + [1., 0., 0.],
  + [1., 0., 0.]]]], dtype=float32)>
  """
  return draw_bounding_boxes_v2(images, boxes, colors, name)
  