message: Updated tanh example
  Updated tanh with example, Arguments and returns
diff: @@ -201,12 +201,20 @@ def relu(x, alpha=0., max_value=None, threshold=0):
  @keras_export('keras.activations.tanh')
  def tanh(x):
  - """Hyperbolic Tangent activation function.
  + """Hyperbolic Tangent (tanh) activation function.
  + For example:
  +
  + ```python
  + # Constant 1-D tensor populated with value list.
  + a = tf.constant([-3.0,-1.0, 0.0,1.0,3.0], dtype = tf.float32)
  + b = tf.keras.activations.tanh(a) #[-0.9950547,-0.7615942, 0.,0.7615942,0.9950547]
  + ```
  Arguments:
  x: Input tensor.
  Returns:
  + A tensor of same shape and dtype of input `x`.
  The tanh activation: `tanh(x) = sinh(x)/cosh(x) = ((exp(x) -
  exp(-x))/(exp(x) + exp(-x)))`.
  """
  