Update instructions for questions in notebooks
https://github.com/PyTorchLightning/pytorch-lightning/blob/master/notebooks/04-transformers-text-classification.ipynb
https://github.com/PyTorchLightning/pytorch-lightning/blob/master/notebooks/06-mnist-tpu-training.ipynb
notebooks too pls.
Originally posted by @rohitgr7 in #6155 (comment)