Link to no_mangle in the reference

Co-authored-by: Kevin Reid <[email protected]>

Author: cuviper

posts/2024-10-17-Rust-1.82.0.md

@@ -158,7 +158,7 @@ A future version of Rust is expected to generalize this to other expressions whi
 
 ### Unsafe attributes
 
-Some Rust attributes, such as `no_mangle`, can be used to [cause Undefined Behavior without any `unsafe` block](https://github.com/rust-lang/rust/issues/28179). If this was regular code we would require them to be placed in an `unsafe {}` block, but so far attributes have not had comparable syntax. To reflect the fact that these attributes can undermine Rust's safety guarantees, they are now considered "unsafe" and should be written as follows:
+Some Rust attributes, such as [`no_mangle`](https://doc.rust-lang.org/reference/abi.html#the-no_mangle-attribute), can be used to [cause Undefined Behavior without any `unsafe` block](https://github.com/rust-lang/rust/issues/28179). If this was regular code we would require them to be placed in an `unsafe {}` block, but so far attributes have not had comparable syntax. To reflect the fact that these attributes can undermine Rust's safety guarantees, they are now considered "unsafe" and should be written as follows:
 
 ```rust
 #[unsafe(no_mangle)]