pinwheel: Format physlock keybindings

hosts/pinwheel/modules/physlock/default.nix

@@ -32,6 +32,7 @@ in
               pause-music = "${pkgs.playerctl}/bin/playerctl -p spotify pause";
             in
               [
+                # will lock the screen with `physlock`, see `lockOn.suspend
                 "$mod SHIFT, x, exec, ${pause-music}; systemctl suspend"
                 "$mod, x, exec, ${pause-music}; ${config.security.wrapperDir}/physlock -d -s -m"
               ];