Update 'Home'

Home.md

@@ -52,6 +52,10 @@ However, `host`, `user` and `api_token` can also be set via ENV variable.
 * [`generate_password`](generate_password) - receive random generated random password from [passwords](https://apps.nextcloud.com/apps/passwords)
 
 
+### callback plugins
+
+* [`talk`](callback_talk) - writes playbook output to a nextcloud talk conversation
+
 ## Developing / Testing / Hacking
 
 * [development](development)