configuration: Fix broken link (home-assistant#2128)

gmacario · fabaff · commit 876d75d45cce · 2017-02-24T17:12:15.000+01:00
The linked URL did not have a leading '/' therefore it resolved into a 404 error.

Signed-off-by: Gianpaolo Macario &lt;gmacario@gmail.com&gt;
diff --git a/source/getting-started/configuration.markdown b/source/getting-started/configuration.markdown
@@ -20,7 +20,7 @@ sensor:
   - platform: random
 ```
 
-The [Setting up devices part](/docs/configuration/devices/) contains of the documentation additional details about adding device and services and [customization](docs/configuration/customizing-devices/).
+The [Setting up devices part](/docs/configuration/devices/) contains of the documentation additional details about adding device and services and [customization](/docs/configuration/customizing-devices/).
 
 For further details about configuration, please take a look at the [configuration documentation](/docs/configuration/).
 
