doc: fix GlobalContext reference

Signed-off-by: Emmanuel Ferdman <[email protected]>

Author: emmanuel-ferdman

src/doc/contrib/src/implementation/console.md

@@ -17,7 +17,7 @@ if they are unable to be displayed. This is generally automatically handled in
 the [`JobQueue`] as it processes each message.
 
 [`Shell`]: https://github.com/rust-lang/cargo/blob/master/src/cargo/core/shell.rs
-[`GlobalContext`]: https://github.com/rust-lang/cargo/blob/master/src/cargo/util/config/mod.rs
+[`GlobalContext`]: https://github.com/rust-lang/cargo/blob/master/src/cargo/util/context/mod.rs
 [`drop_print`]: https://github.com/rust-lang/cargo/blob/e4b65bdc80f2a293447f2f6a808fa7c84bf9a357/src/cargo/util/config/mod.rs#L1820-L1848
 [`JobQueue`]: https://github.com/rust-lang/cargo/blob/master/src/cargo/core/compiler/job_queue/mod.rs