Merge branch 'ugly-reference' into 'master'

Ugly Reference

This prevents it displaying as < code > on https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/install/installation.md

doc/install/installation.md

@@ -10,7 +10,7 @@ If this is unclear check the [GitLab Blog](http://blog.gitlab.org/) for installa
 
 This guide is long because it covers many cases and includes all commands you need, this is [one of the few installation scripts that actually works out of the box](https://twitter.com/robinvdvleuten/status/424163226532986880).
 
-This installation guide was created for and tested on **Debian/Ubuntu** operating systems. Please read [`doc/install/requirements.md`](./requirements.md) for hardware and operating system requirements.
+This installation guide was created for and tested on **Debian/Ubuntu** operating systems. Please read [doc/install/requirements.md](./requirements.md) for hardware and operating system requirements.
 
 This is the official installation guide to set up a production server. To set up a **development installation** or for many other installation options please consult [the installation section in the readme](https://github.com/gitlabhq/gitlabhq#installation).