docs(highlights): add link to the Nix flake

fixes #960

Author: orhun

website/blog/git-cliff-2.7.0.md

@@ -140,9 +140,9 @@ See the related discussion [here](https://github.com/orhun/git-cliff/issues/879)
 
 ### ❄️ Nix environment
 
-We now have a basic and reproducible dev environment using Nix along with CI checks for it.
+We now have a basic and reproducible dev environment using Nix along with CI checks for it!
 
-Here is the Nix flake and you can use it by running `nix build` and `nix run` commands.
+[Here](https://github.com/orhun/git-cliff/blob/main/flake.nix) is the Nix flake and you can use it by running `nix build` and `nix run` commands.
 
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