README: update for newer client job file argument format

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/README b/README
index c21fb6a..8bce835 100644
--- a/README
+++ b/README
@@ -362,7 +362,7 @@
 does on the server side, to allow IP/hostname/socket and port strings.
 You can connect to multiple clients as well, to do that you could run:
 
-fio --client=server2 --client=server2 <job file(s)>
+fio --client=server2 <job file(s)> --client=server2 <job file(s)>
 
 
 Platforms