message: Fixed misleading comment for the return value of where_v2.
diff: @@ -3791,7 +3791,7 @@ def where_v2(condition, x=None, y=None, name=None):
  Returns:
  A `Tensor` with the same type as `x` and `y`, and shape that
  is broadcast from `condition`, `x`, and `y`, if `x`, `y` are non-None.
  - A `Tensor` with shape `(num_true, dim_size(condition))`.
  + Otherwise, a `Tensor` with shape `(num_true, dim_size(condition))`.
  Raises:
  ValueError: When exactly one of `x` or `y` is non-None.
  