message: Update core.py
  Corrected the documentation of the Dense layer, regarding the computation performed by the layer
diff: @@ -43,7 +43,7 @@ class Dense(base.Layer):
  """Densely-connected layer class.
  This layer implements the operation:
  - `outputs = activation(inputs.kernel + bias)`
  + `outputs = activation(inputs * kernel + bias)`
  Where `activation` is the activation function passed as the `activation`
  argument (if not `None`), `kernel` is a weights matrix created by the layer,
  and `bias` is a bias vector created by the layer
  