message: Added reduce_variance and reduce_std_example docstring for axis=0
diff: @@ -419,12 +419,16 @@ _RAGGED_REDUCE_MEAN_EXAMPLE = """
  _RAGGED_REDUCE_VARIANCE_EXAMPLE = """
  >>> rt = tf.ragged.constant([[1, 1, 4], [2, 1], [3], [4, 1]],
  ... dtype=tf.float64)
  + >>> tf.math.reduce_variance(rt, axis=0).numpy()
  + array([1.25, 0., 0.])
  >>> tf.math.reduce_variance(rt, axis=1).numpy()
  array([2., 0.25, 0., 2.25])
  """
  _RAGGED_REDUCE_STD_EXAMPLE = """
  >>> rt = tf.ragged.constant([[1, 0], [2, 1], [3], [4, 1]],
  ... dtype=tf.float64)
  + >>> tf.math.reduce_std(rt, axis=0).numpy()
  + array([1.11803399, 0.47140452])
  >>> tf.math.reduce_std(rt, axis=1).numpy()
  array([0.5, 0.5, 0., 1.5])
  """
  