Fix app description and CHangelog

Signed-off-by: Joas Schilling <coding@schilljs.com>

CHANGELOG.md

@@ -27,8 +27,6 @@ All notable changes to this project will be documented in this file.
 ### Fixed
  - Fixed compatibility with Postgres
   [#537](https://github.com/nextcloud/spreed/pull/537)
- - Fixed compatibility with Oracle
-  [#371](https://github.com/nextcloud/spreed/pull/505)
  - Fixed compatibility with Oracle
   [#371](https://github.com/nextcloud/spreed/pull/371)
  - Compatibility with Nextcloud 13

appinfo/info.xml

@@ -6,14 +6,13 @@
 	<summary><![CDATA[Video & audio-conferencing using WebRTC]]></summary>
 	<description><![CDATA[Video & audio-conferencing using WebRTC
 
+* 💬 *Chat integration!** Nextcloud Talk comes with some simple text chat since Nextcloud 13. More features are planned for future versions.
 * 👥 **Private, group, public and password protected calls!** Just invite somebody, a whole group or send a public link to invite to a call.
 * 💻 **Screen sharing!** Share your screen with participants of your call.
 * 🚀 **Integration with other Nextcloud apps!** Currently Contacts and users – more to come.
 * 🙈 **We’re not reinventing the wheel!** Based on the great [simpleWebRTC](https://simplewebrtc.com/) library.
 
 And in the works for the [coming versions](https://github.com/nextcloud/spreed/milestones/):
-
-* 💬 [Chat integration](https://github.com/nextcloud/spreed/issues/35)
 * ✋ [Federated calls](https://github.com/nextcloud/spreed/issues/21), to call people on other Nextclouds
 
 	]]></description>