antora: add naho as maintainer

To simplify maintenance of the antora-ui-default and
antora-lunr-extension packages, naho should also be added as a
maintainer for the core Antora package.

Link: #332341

pkgs/by-name/an/antora/package.nix

@@ -40,7 +40,12 @@ buildNpmPackage rec {
     homepage = "https://antora.org";
     license = licenses.mpl20;
     mainProgram = "antora";
-    maintainers = [ maintainers.ehllie ];
+
+    maintainers = with maintainers; [
+      ehllie
+      naho
+    ];
+
     platforms = lib.platforms.all;
   };
 }