Update integration-guides/flutterflow-+-powersync.mdx

Author: benitav

integration-guides/flutterflow-+-powersync.mdx

@@ -26,6 +26,7 @@ Key improvements are:
     Before starting this guide, you'll need:
     - A PowerSync account ([sign up here](https://accounts.journeyapps.com/portal/powersync-signup?s=docs)).
     - A Supabase account ([sign up here](https://supabase.com/dashboard/sign-up)).
+    - A [paid plan](https://www.flutterflow.io/pricing) with FlutterFlow for the ability to import a Library into a project.
 </Note>
 
 This guide walks you through building a basic item management app from scratch and takes about 30-40 minutes to complete. You should then be able to use this knowledge to build and extend your own app.