nixos/lavalink: add release note

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -127,6 +127,8 @@
 
 - [Music Assistant](https://music-assistant.io/), a music library manager for your offline and online music sources that can stream to a wide range of supported players. Available as [services.music-assistant](#opt-services.music-assistant.enable).
 
+- [Lavalink](https://github.com/lavalink-devs/Lavalink), a standalone audio sending node based on Lavaplayer and Koe. Availble as [services.lavalink](#opt-services.lavalink.enable).
+
 - [zeronsd](https://github.com/zerotier/zeronsd), a DNS server for ZeroTier users. Available with [services.zeronsd.servedNetworks](#opt-services.zeronsd.servedNetworks).
 
 - [Collabora Online](https://www.collaboraonline.com/), a collaborative online office suite based on LibreOffice technology. Available as [services.collabora-online](options.html#opt-services.collabora-online.enable).