fix typo in commandline help message
fix typo in commandline help message

Signed-off-by: Csaba Henk <csaba@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 1482 (typo in help message)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1482

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster