Diagram not rendering in docs

[dgwyer]

Just noticed that the diagrams section of the docs doesn't seem to be rendering properly.

[ozpau]

This seems to be caused by Importing CSV/TSV/etc part since there db is redefined. But I am surprised that README.md is still rendered properly: https://github.com/AnswerDotAI/fastlite?tab=readme-ov-file#diagrams

IIRC docs don't run the notebook? So I'd guess the notebook wasn't run in the correct order.