[ci-skip] Update license in README

README.md

@@ -6,8 +6,7 @@
 A Minecraft server proxy with unparalleled server support, scalability,
 and flexibility.
 
-Velocity is licensed under the MIT license for ultimate permissiveness
-and expanding the pool of potential contributors and users.
+Velocity is licensed under the GPLv3 license.
 
 ## Goals
 
@@ -34,4 +33,4 @@ Once you've built Velocity, you can copy and run the `-all` JAR from
 and you can configure it from there.
 
 Alternatively, you can get the proxy JAR from the [downloads](https://www.velocitypowered.com/downloads)
-page.
+page.