Update posts/2019-05-14-Rust-1.34.2.md

Co-Authored-By: Jonas Schievink <jonasschievink@gmail.com>

Author: pietroalbini

posts/2019-05-14-Rust-1.34.2.md

@@ -20,7 +20,7 @@ If you don't have it already, you can [get `rustup`][install] from the
 appropriate page on our website.
 
 [install]: https://www.rust-lang.org/install.html
-[notes]: https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-TODO
+[notes]: https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1342-2019-05-14
 
 ## What's in 1.34.2 stable