libbpf-tools/mountsnoop: Fix example strings.
@@ -84,7 +84,7 @@ const char argp_program_doc[] =
"\n"
"EXAMPLES:\n"
" mountsnoop # trace mount and umount syscalls\n"
-" mountsnoop -v # output vertically(one line per column value)\n"
+" mountsnoop -d # detailed output (one line per column value)\n"
" mountsnoop -p 1216 # only trace PID 1216\n";
static const struct argp_option opts[] = {
