Merge pull request #302 from dtolnay/hacks

Fix broken link to Mozilla Hacks post

Author: alexcrichton

posts/2018-12-06-Rust-1.31-and-rust-2018.md

@@ -49,9 +49,10 @@ March](https://blog.rust-lang.org/2018/03/12/roadmap.html), [and then in
 July](https://blog.rust-lang.org/2018/07/27/what-is-rust-2018.html).
 For some more background about the *why* of Rust 2018, please go read those
 posts; there's a lot to cover in the release announcement, and so we're going
-to focus on the *what* here. There's also a [post on Mozilla
-Hacks](https://hacks.mozilla.org/2018/12/rust-2018-is-here-but-what-is-it/)
-as well!
+to focus on the *what* here. There's also a [post on Mozilla Hacks][hacks] as
+well!
+
+[hacks]: https://hacks.mozilla.org/2018/12/rust-2018-is-here/
 
 Breifly, Rust 2018 is an opportunity to bring
 all of the work we've been doing over the past three years together, and create