Training url mentioned in Tutorial for Bert is not valid!

[yhyu13]

🐛 Bug

https://github.com/huggingface/transformers#run_squadpy-fine-tuning-on-squad-for-question-answering

Metnioned in https://github.com/pytorch/captum/blob/master/tutorials/Bert_SQUAD_Interpret.ipynb is no longer accessible, it points to the hf transformer main page instead