[Haskell-beginners] All About Monads

Hello, I am currently going through "All About Monads" on the Haskell Wiki. I see that it also has a Github repository[1]. However, the repository seems outdated to the point where the Makefile no longer works (I was not able to build the wiki), some (if not most) of the examples no longer compile, or they do so with warnings (e.g. example12.hs), and even the formatting of the published article on the wiki seems broken. What I'm asking is if the repository I mentioned is the correct one, and if it makes any sense to send a pull request or if it is worth the effort to fork it and update the code. Thanks! [1]: https://github.com/dag/all-about-monads