Added reference to the official sched-ext wiki

src/content/docs/configuration/sched-ext.mdx

@@ -1,6 +1,6 @@
 ---
 title: sched-ext Tutorial
-description: Tutorial how to use LAVD, Rusty, Rustland and bpfland
+description: Tutorial about how to use the framework and miscellaneous information
 ---
 
 import { Steps } from '@astrojs/starlight/components';
@@ -365,6 +365,7 @@ auto_mode = ["--performance"]
 If you want to learn more about the sched-ext framework. Take a look at the links below.
 
 - [Sched-ext Schedulers Source Code](<https://github.com/sched-ext/scx/tree/main/scheds/rust>)
+- [Sched-ext Official Wiki](<https://github.com/sched-ext/scx/wiki>)
 - [Changwoo Min: Introduction to sched-ext & CPU Scheduling Part 1](<https://blogs.igalia.com/changwoo/sched-ext-a-bpf-extensible-scheduler-class-part-1/>)
   - [Part 2](<https://blogs.igalia.com/changwoo/sched-ext-scheduler-architecture-and-interfaces-part-2/>)
 - [Andrea Righi: Re-implementing my Linux Rust scheduler in eBPF](<https://arighi.blogspot.com/2024/08/re-implementing-my-linux-rust-scheduler.html>)