Update README

Author: singerdmx

README.md

@@ -84,7 +84,7 @@ _controller = QuillController(
 
 For web development, use `flutter config --enable-web` for flutter or use [ReactQuill] for React.
 
-It is required to provide `EmbedBuilder`, e.g. [defaultEmbedBuildersWeb](https://github.com/singerdmx/flutter-quill/blob/master/example/lib/universal_ui/universal_ui.dart#L95).
+It is required to provide `EmbedBuilder`, e.g. [defaultEmbedBuildersWeb](https://github.com/singerdmx/flutter-quill/blob/master/example/lib/universal_ui/universal_ui.dart#L99).
 Also it is required to provide `webImagePickImpl`, e.g. [Sample Page](https://github.com/singerdmx/flutter-quill/blob/master/example/lib/pages/home_page.dart#L237).
 
 ## Desktop