Update references and folder names

system/hardware/nvidia.nix

@@ -0,0 +1,10 @@
+{pkgs, config, ...}: {
+  # Enable video drivers                              
+  services.xserver.videoDrivers = ["nvidia"];         
+  hardware.nvidia = {                                 
+    modesetting.enable = true;
+    nvidiaSettings = false;
+    package = config.boot.kernelPackages.nvidiaPackages.beta;
+    open = false;
+  };
+}