docs: regenerate gh readme

[machow]

This PR addresses an issue flagged by @chendaniely -- the intro snippet produces errors.

Note that one important piece here is that the github readme is generated from the quartodoc homepage (currently https://machow.github.io/quartodoc/get-started/overview.html). But this hadn't been regenerated to reflect the latest there.

I don't love how verbose the intro snippet is now, but let's just get it working in this PR. I think there are some nice ways to streamline things down the road!

TODO: add a test of the intro snippet

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.78%. Comparing base (ee4fa3c) to head (7edf864).

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #385   +/-   ##
=======================================
  Coverage   88.78%   88.78%           
=======================================
  Files          37       37           
  Lines        3004     3004           
=======================================
  Hits         2667     2667           
  Misses        337      337           

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