Link directly to GitHub repo in quickstart guide.

Author: Nikitf777

docs/guide/02-quickstart.md

@@ -12,8 +12,8 @@ Started].
 ## Running Examples
 
 The absolute fastest way to start experimenting with Rocket is to clone the
-Rocket repository and run the included examples in the `examples/` directory.
-For instance, the following set of commands runs the `hello` example:
+[Rocket repository](@github) and run the included examples in the `examples/`
+directory. For instance, the following set of commands runs the `hello` example:
 
 ```sh
 git clone https://github.com/rwf2/Rocket