Fix nix.dev link

en/nix-modules.md

@@ -12,7 +12,7 @@ Using the [[modules|module system]] is a key stepping stone to writing maintaina
 
 We shall begin by understanding the low-levels: how to use `evalModules` from [[nixpkgs|nixpkgs]] to define and use our own modules from scratch, using the aforementioned `lsd` use-case. The next tutorial in this series will go one high-level up and talk about how to work with modules across [[flakes|flakes]], using [[flake-parts]].
 
-[doc]: https://nix.dev/tutorials/module-system/module-system.html
+[doc]: https://nix.dev/tutorials/module-system/deep-dive
 
 ## A simple example
 
@@ -169,4 +169,4 @@ Our 5th flake is fairly simple, due to hiding all the implementation in an exter
 
 You have just read a quick introduction to the module system, in particular how to define, use and share them in [[flakes]]. To learn more about the module system, we recommend [this video from Tweag](https://www.youtube.com/watch?v=N7hFP_40DJo) as well the article "[Module system deep dive][doc]" from nix.dev. Look out for the next tutorial in this series, where we will talk about [[flake-parts]].
 
-[lsd]: https://github.com/lsd-rs/lsd
+[lsd]: https://github.com/lsd-rs/lsd