update playlist

Author: asottile

README.md

@@ -638,3 +638,4 @@ the full [playlist] is on youtube
 1. [why is there this weird semicolon ???](https://youtu.be/Ikke2Sg-nW4)
 1. [why do .pth files run twice? (and fixing it!)](https://youtu.be/X9IYhsNUIe8)
 1. [annotated tags](https://youtu.be/GhWbJHdCkOA)
+1. [typing \*args and \*\*kwargs](https://youtu.be/2Uo3iD8lJh4)