message: minor format clean up
diff: @@ -128,7 +128,7 @@ class Weibull(bijector.Bijector):
  return x
  is_valid = check_ops.assert_non_negative(
  x,
  - message="Forward transformation input must be at least {}.".format(0))
  + message="Forward transformation input must be at least 0.")
  return control_flow_ops.with_dependencies([is_valid], x)
  def _maybe_assert_valid_y(self, y):
  