add redirect

Author: fricklerhandwerk

_redirects

@@ -40,4 +40,4 @@
 /manual/nix/unstable/* https://hydra.nixos.org/job/nix/master/manual/latest/download/1/manual/:splat 200
 /manual/nix/development/* https://hydra.nixos.org/job/nix/master/manual/latest/download/1/manual/:splat 200
 /tutorials/nixos/continuous-integration-github-actions /guides/recipes/continuous-integration-github-actions 301
-
+/guides/recipes/autoformatting /guides/faq#how-to-format-nix-language-code-automatically 301