Broken links in github module

Broken link in lesson 2 in github module

https://github.com/fivethirtyeight/chartbuilder-2/blob/master/src/styles/core.scss

Links below -- change this from chartbuilder2 to something else that is public-facing:
<img width="1257" alt="Screen Shot 2022-01-09 at 4 49 20 PM" src="https://user-images.githubusercontent.com/468544/148702362-5309d47c-120f-40ac-a9bc-5342c2c42884.png">

