message: Typo fix `def call(inputs, self)` -> `def call(self, inputs)` in `Layer.add_loss` documentation.
diff: @@ -1185,7 +1185,7 @@ class Layer(module.Module, version_utils.LayerVersionSelector):
  ```python
  class MyLayer(tf.keras.layers.Layer):
  - def call(inputs, self):
  + def call(self, inputs):
  self.add_loss(tf.abs(tf.reduce_mean(inputs)), inputs=True)
  return inputs
  ```
  