Auto merge of rust-lang#116202 - emmanuel-ferdman:wip, r=ehuss

Update location of `personality/gcc.rs`

**PR Summary**:
PR updates the location of `personality/gcc.rs` file in the docs.

Author: bors

src/doc/unstable-book/src/language-features/lang-items.md

@@ -37,7 +37,7 @@ Most lang items are defined by `core`, but if you're trying to build
 an executable without the `std` crate, you might run into the need
 for lang item definitions.
 
-[personality]: https://github.com/rust-lang/rust/blob/master/library/std/src/personality/gcc.rs
+[personality]: https://github.com/rust-lang/rust/blob/master/library/std/src/sys/personality/gcc.rs
 
 ## Example: Implementing a `Box`