[emacs] Enable lua mode, sigh

emacs/.config/doom/init.el

@@ -145,7 +145,7 @@
        ;;lean
        ;;factor
        ledger              ; an accounting system in Emacs
-       ;;lua               ; one-based indices? one-based indices
+       lua               ; one-based indices? one-based indices
        markdown            ; writing docs for people to ignore
        nim                 ; python + lisp at the speed of c
        ;;nix               ; I hereby declare "nix geht mehr!"