chore: clarify functions deployment for branches (supabase#22739)

Author: sweatybridge

apps/www/_blog/2024-04-15-branching-publicly-available.mdx

@@ -40,7 +40,7 @@ Our open Beta introduces a number of requested features:
 
 ### Edge Function support
 
-Branching now deploys your Edge Functions along with your migrations. All Functions in your `./supabase/functions` will automatically be deployed without any extra configuration.
+Branching now deploys your Edge Functions along with your migrations. Any Functions added or changed in your `./supabase/functions` will automatically be deployed without any extra configuration.
 
 ### Monorepo support