Fix spurious correction with sudo vim

user@host:~ $ sudo vim /etc/rc.conf
zsh: correct 'vim' to '.vim' [nyae]? 

http://www.zsh.org/mla/users/2012/msg00028.html

lib/correction.zsh

@@ -8,3 +8,4 @@ alias gist='nocorrect gist'
 alias heroku='nocorrect heroku'
 alias ebuild='nocorrect ebuild'
 alias hpodder='nocorrect hpodder'
+alias sudo='nocorrect sudo'