Remove incomplete sentence in docs (#1186)

Feel free to complete the thought instead, if you remember what it was!

Signed-off-by: Rodrigo Ipince <[email protected]>

Author: ipince

docs/app/docs/guides/using_flakes.md

@@ -2,7 +2,7 @@
 title: Using Packages from Nix Flakes
 ---
 
-Devbox supports installing packages with [Nix Flakes](https://nixos.wiki/wiki/Flakes). While Nixpkgs is a great
+Devbox supports installing packages with [Nix Flakes](https://nixos.wiki/wiki/Flakes).
 
 Devbox currently provides two ways to use Flakes to install packages in your project: