Rollup merge of #71041 - JohnTitor:rustc-dev-guide, r=jonas-schievink

Update links of `rustc guide`

Picks up the things we left behind in the transition, hopefully they're last ones.

r? @spastorino

Author: Dylan-DPC

src/librustc_infer/traits/mod.rs

@@ -1,6 +1,6 @@
-//! Trait Resolution. See the [rustc guide] for more information on how this works.
+//! Trait Resolution. See the [rustc-dev-guide] for more information on how this works.
 //!
-//! [rustc guide]: https://rust-lang.github.io/rustc-guide/traits/resolution.html
+//! [rustc-dev-guide]: https://rustc-dev-guide.rust-lang.org/traits/resolution.html
 
 mod engine;
 pub mod error_reporting;

src/librustc_trait_selection/lib.rs

@@ -2,9 +2,9 @@
 //!
 //! - **Traits.** Trait resolution is implemented in the `traits` module.
 //!
-//! For more information about how rustc works, see the [rustc guide].
+//! For more information about how rustc works, see the [rustc-dev-guide].
 //!
-//! [rustc guide]: https://rust-lang.github.io/rustc-guide/
+//! [rustc-dev-guide]: https://rustc-dev-guide.rust-lang.org/
 //!
 //! # Note
 //!