Update instructions for Debian/Ubuntu
Within IRC the follwing comment was made:
20:28:38 andol | Not sure if this is the right channel, but I noticed a minor issue with the https://www.torproject.org/docs/debian.html.en page. 20:29:20 andol | The dropdown menu where you select what dist/release you are running isn't up-to-date, where it refers to wheezy as stable and jessie as testing, etc
So could anyone update the instructions at the page to reflect the correct names for Debian stable/testing/unstable?