fix: update renamed option

Author: soopyc

nix/t2-iso-gnome.nix

@@ -7,7 +7,7 @@
   ];
 
   # Audio works better with PipeWire
-  hardware.pulseaudio.enable = lib.mkForce false;
+  services.pulseaudio.enable = lib.mkForce false;
   security.rtkit.enable = true;
   services.pipewire = {
     enable = true;