Fix format args for -t help.
Fix format args for -t help.

Change-Id: I3549dff29fe4bb10d882b01c81098f3cd1a3d057
Reviewed-on: http://review.northscale.com/2073
Reviewed-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

nimishzynga/ns_server,pavel-blagodov/ns_server,nimishzynga/ns_server,ceejatec/ns_server,daverigby/ns_server,nimishzynga/ns_server,mschoch/ns_server,nimishzynga/ns_server,membase/ns_server,mschoch/ns_server,nimishzynga/ns_server,ceejatec/ns_server,mschoch/ns_server,ceejatec/ns_server,daverigby/ns_server,pavel-blagodov/ns_server,t3rm1n4l/ns_server,vzasade/ns_server,membase/ns_server,daverigby/ns_server,membase/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,membase/ns_server,mschoch/ns_server,mschoch/ns_server,membase/ns_server,ceejatec/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,daverigby/ns_server,vzasade/ns_server,t3rm1n4l/ns_server