chore(templates/website): adds seeded users to readme (#3412)

Co-authored-by: Jacob Fletcher <jacobsfletch@gmail.com>

templates/website/README.md

@@ -227,6 +227,16 @@ That's it! The Docker instance will help you get up and running quickly while al
 
 To seed the database with a few pages, posts, and projects you can run `yarn seed`. This template also comes with a `GET /api/seed` endpoint you can use to seed the database from the admin panel.
 
+The seed script will also create two users for demonstration purposes only:
+1. Demo Author
+    - Email: `demo-author@payloadcms.com`
+    - Password: `password`
+    - Role: `admin`
+2. Demo User
+    - Email: `demo-user@payloadcms.com`
+    - Password: `password`
+    - Role: `user`
+
 > NOTICE: seeding the database is destructive because it drops your current database to populate a fresh one from the seed template. Only run this command if you are starting a new project or can afford to lose your current data.
 
 ## Production