fix small documentation bug
-//! Context management
-//! https://en.wikipedia.org/wiki/Context_switch
-//! https://wiki.osdev.org/Context_Switching
+//! # Context management
+//!
+//! For resources on contexts, please consult [wikipedia](https://en.wikipedia.org/wiki/Context_switch) and [osdev](https://wiki.osdev.org/Context_Switching)
use alloc::boxed::Box;
use core::alloc::{Alloc, GlobalAlloc, Layout};
use core::sync::atomic::Ordering;
