update wiki

Author: o2sh

docs/wiki/nix-local-setup.md

@@ -1,6 +1,4 @@
-# Nix as a Development Environment
-
-[Nix](https://nixos.org/) is a package manager that uses a purely functional approach to dependency management. Packages in Nix are built and run in isolated, reproducible environments. This tutorial walks you through setting up a development environment for [Onefetch](https://github.com/o2sh/onefetch) using Nix.
+[Nix](https://nixos.org/) is a package manager that uses a purely functional approach to dependency management. Packages in Nix are built and run in isolated, reproducible environments. This tutorial walks you through setting up a development environment for Onefetch using Nix.
 
 > This guide assumes you already have Nix [installed](https://nixos.org/download.html#nix-quick-install) on your system.