Update README.md

Author: topi314

README.md

@@ -12,7 +12,7 @@ A [basic example bot](Testbot) is available.
 [![Lavalink Guild](https://discordapp.com/api/guilds/1082302532421943407/embed.png?style=banner2)](https://discord.gg/ZW4s47Ppw4)
 
 > [!Warning]
-> Lavalink v4 is now in beta! See [the changelog](CHANGELOG.md) for more information.
+> Lavalink v4 is now **out** of beta! See [the changelog](CHANGELOG.md) for more information.
 
 ## Getting started
 * Pick one of the [up-to-date clients](https://lavalink.dev/clients). Advanced users can create their own using the [API documentation