Clean up procedure formatting

The steps were being formatted as code examples, which seemed incorrect.

I didn't do any testing, but I poked around at the API console and tried to clarify the instructions a bit. 

Note that where the steps currently say, "Then copy the SHA1 value into the **Create client ID** field and use `co.uk.gauntface.mini.mobile.devicelab` for the package name." I do not see "Create client ID" above the SHA1 field, I see "Signing Certificate Fingerprint (SHA1)". But not sure if I'm looking at the wrong version of the console, so I didn't change this.