message: Update tf.math.logical_xor
  Changes made after review
diff: @@ -1213,15 +1213,12 @@ def logical_xor(x, y, name="LogicalXor"):
  Usage:
  - '''python
  + ```python
  x = tf.constant([False, False, True, True], dtype = tf.bool)
  y = tf.constant([False, True, False, True], dtype = tf.bool)
  z = tf.logical_xor(x, y, name="LogicalXor")
  - with tf.Session() as sess:
  - print(z)
  - print(sess.run(z))
  -
  # here z = [False True True False]
  + ```
  Args:
  x: A `Tensor` type bool.
  