message: Standardize references in Inception-Resnet-V2
diff: """Inception-ResNet V2 model for Keras.
  -Reference paper:
  +Reference:
  - [Inception-v4, Inception-ResNet and the Impact of
  Residual Connections on Learning](https://arxiv.org/abs/1602.07261)
  (AAAI 2017)
  @@ -291,7 +291,7 @@ def conv2d_bn(x,
  def inception_resnet_block(x, scale, block_type, block_idx, activation='relu'):
  - """Adds a Inception-ResNet block.
  + """Adds an Inception-ResNet block.
  This function builds 3 types of Inception-ResNet blocks mentioned
  in the paper, controlled by the `block_type` argument (which is the
  