message: Add a newline before doctest
diff: @@ -207,6 +207,7 @@ def relu(x, alpha=0., max_value=None, threshold=0):
  and to use a non-zero multiple of the input for values below the threshold.
  For example:
  +
  >>> foo = tf.constant([-10, -5, 0.0, 5, 10], dtype = tf.float32)
  >>> tf.keras.activations.relu(foo).numpy()
  array([ 0., 0., 0., 5., 10.], dtype=float32)
  @@ -395,6 +396,7 @@ def deserialize(name, custom_objects=None):
  TensorFlow Activation function denoted by input string.
  For example:
  +
  >>> tf.keras.activations.deserialize('linear')
  <function linear at 0x1239596a8>
  >>> tf.keras.activations.deserialize('sigmoid')
  