readme: ## Trained Models for ConvLab-2
  
  Due to the potential security risk, The trained models of ConvLab-2 hosted at Azure can not be accessed currently. Therefore, we copied these models and placed them in [Hugging Face](https://huggingface.co/ConvLab/ConvLab-2_models). We've replaced the model URL in the ConvLab-2 code with the model URL in our Hugging Face repo. If you try to use trained models of ConvLab-2, make sure to update the code.