Add Traefik Forward Auth against KeyCloak

manuscript/recipes/nextcloud.md

@@ -229,13 +229,7 @@ Note that this .htaccess can be overwritten by NextCloud, and you may have to re
 
     [![Common Observatory](../images/common_observatory.png)](https://www.observe.global/)
 
-## Chef's Notes
+## Chef's Notes 📓
 
 1. Since many of my other recipes use PostgreSQL, I'd have preferred to use Postgres over MariaDB, but MariaDB seems to be the [preferred database type](https://github.com/nextcloud/server/issues/5912).
-2. I'm [not the first user](https://github.com/nextcloud/docker/issues/528) to stumble across the service discovery bug with reverse proxies.
-
-### Tip your waiter (support me) 👏
-
-Did you receive excellent service? Want to make your waiter happy? (_..and support development of current and future recipes!_) See the [support](/support/) page for (_free or paid)_ ways to say thank you! 👏
-
-### Your comments? 💬
+2. I'm [not the first user](https://github.com/nextcloud/docker/issues/528) to stumble across the service discovery bug with reverse proxies.