Mention Coldhak's tor-relay-bootstrap in the Tor website doc for running a relay

https://github.com/coldhakca/tor-relay-bootstrap (a project once started by Micah Lee and now taken over by Coldhak after Micah gave them permission)

It's a "set and forget" script to make a Tor relay. It should be noted in the Tor relay website doc since it makes the process very easy:

https://www.torproject.org/docs/tor-doc-relay.html.en