Code improvements

lib/constants/urls.dart

@@ -6,5 +6,5 @@ class Urls {
   static const linkdingRepo = "https://github.com/sissbruecker/linkding";
   static const support = "https://appsupport.jgeek00.com";
   static gstatic(url) =>
-      "https://t2.gstatic.com/faviconV2?client=SOCIAL&type=FAVICON&fallback_opts=TYPE,SIZE,URL&url=${url}&size=16";
+      "https://t2.gstatic.com/faviconV2?client=SOCIAL&type=FAVICON&fallback_opts=TYPE,SIZE,URL&url=$url&size=16";
 }

lib/screens/bookmarks/ui/delete_bookmark_modal.dart

@@ -8,10 +8,10 @@ class DeleteBookmarkModal extends StatelessWidget {
   final void Function(Bookmark) onDelete;
 
   const DeleteBookmarkModal({
-    Key? key,
+    super.key,
     required this.bookmark,
     required this.onDelete,
-  }) : super(key: key);
+  });
 
   @override
   Widget build(BuildContext context) {