fix image link

Author: steveklabnik

_posts/2017-12-21-rust-in-2017.md

@@ -28,7 +28,7 @@ There’s not room in a single post to cover everything that happened, but we’
   - You can see how incremental recompilation performs in practice on some of our key benchmarks below. Note that `-opt` refers to optimized builds, “best case” refers to a recompilation with no changes, and `println` refers to a recompilation with a small change, like adding a `println` call to a function body. We expect the 50+% speedups we’re seeing now to continue to grow next year as we push incremental recompilation more deeply through the compiler.
   - Together with the changes in the compiler we will also update Cargo to use incremental recompilation by default for select use cases, so you can take advantage of improved compile times without the need for additional configuration. Of course you will also be able to opt into and out of the feature on a case by case basis as you see fit.
 
-![Incremental recompilation benchmarks][/images/2017-12-Retro/incr-bench.png]{:class="center"}
+![Incremental recompilation benchmarks](/images/2017-12-Retro/incr-bench.png){:class="center"}
 
 ## Rust should provide a solid, but basic IDE experience
 - Rust now has solid IDE support in IntelliJ and via the Rust Language Server (RLS). Whether you prefer a fully-featured IDE or a more lightweight editor with IDE features, you can boost your productivity by taking advantage of great Rust integration.