Update lxc_create.c corrected argument usage example for -t

I think '-t timeout' was mistakenly written, so I corrected it to '-t
template', since the -t argument is used for setting templates, not
timeout as far as I know.

Signed-off-by: pc-wurm <yordanov@pc-wurm.de>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

src/lxc/lxc_create.c

@@ -117,7 +117,7 @@ static struct lxc_arguments my_args = {
 	.progname = "lxc-create",
 	.helpfn   = create_helpfn,
 	.help     = "\
---name=NAME [-w] [-r] [-t timeout] [-P lxcpath]\n\
+--name=NAME [-w] [-r] [-t template] [-P lxcpath]\n\
 \n\
 lxc-create creates a container\n\
 \n\