Author: Petr Skoda
MDL-27263 fix already logged in error message typo
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f5fddc6081976543bd2e209dffd20c729edadb48
http://github.com/moodle/moodle/commit/f5fddc6081976543bd2e209dffd20c729edadb48
+ 2.0 en [alreadyloggedin,core_error]