doc: Minor fix.
Due to todays reminder:
On Tue 2014-04-22 18:46:15 -0400, Daniel Kahn Gillmor wrote: > With --trust-model=always, all keys and user IDs are considered > automatically valid; they are not automatically trusted (setting > universal ownertrust to anything other than "ultimate" would be > insufficient to acheive the effect of --trust-model=always, due to > --max-cert-depth and certificate path reachability). > > Thanks to Nicolai Josuttis for pointing out this documentation error.