message: Update activations.py
  Added example usage for softsign activation
diff: @@ -181,6 +181,13 @@ def softplus(x):
  def softsign(x):
  """Softsign activation function.
  + Example Usage:
  +
  + >>> a = tf.constant([-20, -1.0, 0.0, 1.0, 20], dtype = tf.float32)
  + >>> b = tf.keras.activations.softsign(a)
  + >>> b.numpy()
  + [-0.95238096, -0.5, 0., 0.5, 0.95238096]
  +
  Arguments:
  x: Input tensor.
  