Fantastic work on this book - thank you so much for making it open source!

Description

I ran into a few build errors while building via build.sh:

• Broken arviz intersphinx mapping link
• Typo on notebooks_update/chp_06.ipynb

I also needed to remove the markdown files in the notebooks_updated folder, but that could be just me.

Reference

Author Section

These are just my best estimates of what was needed - I could be totally off. Just wanted to share in case it saves anyone trouble down the line. Thanks!