softmaker-{office,nx}: add liberodark to maintainers

pkgs/applications/office/softmaker/generic.nix

···
 
   desktopItems = builtins.attrValues desktopItems;
 
-  meta = with lib; {
+  meta = {
     description = "Office suite with a word processor, spreadsheet and presentation program";
     homepage = "https://www.softmaker.com/";
-    sourceProvenance = with sourceTypes; [ binaryNativeCode ];
-    license = licenses.unfree;
-    maintainers = [ ];
+    sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
+    license = lib.licenses.unfree;
+    maintainers = with lib.maintainers; [ liberodark ];
     platforms = [ "x86_64-linux" ];
   };
 }