Revert "add a "docs" to the manual URI as listed in torrc.sample.in"

Revert "add  a "docs" to the manual URI as listed in torrc.sample.in"

This reverts commit 55e8cae81553678ec77ce6b8fb1bf2d5e483e0aa.

The conversation from irc:
> weasel: i had intended to leave torrc.sample.in alone in maint-0.2.2,
since i don't want to make all your stable users have to deal with
a torrc change. but nickm changed it. is it in fact the case that a
change in that file means a change in the deb?
<weasel> it means you'll prompt every single user who ever touched
their torrc
<weasel> and they will be asked if they like your new version better
than what they have right now
<weasel> so it's not great

Instead I changed the website to redirect requests for the tor-manual
URL listed in maint-0.2.2's torrc.sample.in so the link will still work.