Link to Google Colab notebook not working
Hi, it seems that the link to ```A notebook on how to [finetune BART for summarization with fastai using blurr](https://colab.research.google.com/github/ohmeow/ohmeow_website/blob/master/_notebooks/2020-05-23-text-generation-with-blurr.ipynb).``` is broken.  
@patrickvonplaten 
cc @ohmeow who wrote the notebook.<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

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