Move from home.file to xdg.configFile where applicable

modules/home/programs/gui/mangohud/default.nix

@@ -2,25 +2,23 @@
 {
   config = lib.mkIf config.home.desktop.enable {
     programs.mangohud.enable = true;
-    home.file = {
-      # These options exist in Nixlang, but the order is not respected.
-      ".config/MangoHud/MangoHud.conf".text = ''
-        table_columns=2
-        frametime=0
-        legacy_layout=0
-        font_scale=0.80
-        background_alpha=0.25
-        
-        fps
-        fps_color_change
-        ram
-        vram
-        cpu_stats
-        cpu_load_change
-        gpu_stats
-        gpu_load_change
-        frame_timing
-      '';
-    };
+    # These options exist in Nixlang, but the order is not respected.
+    xdg.configFile."MangoHud/MangoHud.conf".text = ''
+      table_columns=2
+      frametime=0
+      legacy_layout=0
+      font_scale=0.80
+      background_alpha=0.25
+      
+      fps
+      fps_color_change
+      ram
+      vram
+      cpu_stats
+      cpu_load_change
+      gpu_stats
+      gpu_load_change
+      frame_timing
+    '';
   };
 }