Add a space between the option and its argument. Also, do not enclose
the argument in asterisk characters.
Fixes a typo introduced in aa4c61f (Document database checking options,
2014-12-28).
Reported-by: Luca Weiss <luca.emanuel.weiss@gmail.com>
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>