Those weren't the course notes. That's a wiki for (and from) students and TA's, mostly. One semester's course notes are here:https://colormygraph.ugrad.cs.cmu.edu/anupam/
The lecture that discusses finite probability distributions is at: https://colormygraph.ugrad.cs.cmu.edu/site_media/static//cou...
For what I read, those were the course notes.