Qdevice: fix spell errors in qdevice

There are somwe spell errors in qdevice-net-algo-test.c,
qnetd-algo-2nodelms.c, qnetd-algo-test.c qnetd-algo-ffsplit.c

Signed-off-by: Bin Liu <bliu@suse.com>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>