chore: update Velocity's system properties (#561)

Author: Timongcraft

docs/velocity/admin/reference/system-properties.md

@@ -79,7 +79,12 @@ The default value shown may not be set for the property but will only be used by
 #### velocity.disable-native-transport
 
 - **default**: `false`
-- **description**: Whether to disable Netty's native transport methods like Epoll. If set to true, Velocity will use Java's NIO transport instead.
+- **description**: Whether to disable Netty's native transport methods like the io_uring support and Epoll. If set to true, Velocity will use Java's NIO transport instead.
+
+#### velocity.disable-iouring-transport
+
+- **default**: `false`
+- **description**: Whether to disable Netty's io_uring transport method. If set to true, Velocity will use Netty's Epoll transport instead. This setting is overridden if `velocity.disable-native-transport` is set to false.
 
 #### velocity.natives-disabled