What's Left page is broken

#5574 seems to have done it's job, but now the website doesn't render the csv: https://rustpython.github.io/pages/whats-left. I can't seem to find the problem in the csv however.

Relevant commit: https://github.com/RustPython/rustpython.github.io/commit/bb59fe269fa0dcbf8eefba698b0773d99e487fcd