cosmic-design-demo: add HeitorAugustoLN as a maintainer

Author: HeitorAugustoLN

pkgs/by-name/co/cosmic-design-demo/package.nix

@@ -52,7 +52,10 @@ rustPlatform.buildRustPackage {
     homepage = "https://github.com/pop-os/cosmic-design-demo";
     description = "Design Demo for the COSMIC Desktop Environment";
     license = lib.licenses.mpl20;
-    maintainers = with lib.maintainers; [ nyabinary ];
+    maintainers = with lib.maintainers; [
+      nyabinary
+      HeitorAugustoLN
+    ];
     platforms = lib.platforms.linux;
     mainProgram = "cosmic-design-demo";
   };