Issues with finetuning colab notebook

[micahcarroll]

The fine-tuning colab notebook doesn't fully work.

The first cell in the Fine-tuning section errors out. I'm guessing it's probably due to specific versions of packages being required (which are not enforced in the first cell).

Also, as a very minor additional thing, this link is broken: This notebook was modified from https://huggingface.co/transformers/custom_datasets.html.