s390x/virtio-ccw: fix spelling

Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>
Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com>

hw/s390x/virtio-ccw.c

@@ -1476,7 +1476,7 @@ static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
     int n = virtio_get_num_queues(vdev);
 
     if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) {
-        error_setg(errp, "The nubmer of virtqueues %d "
+        error_setg(errp, "The number of virtqueues %d "
                    "exceeds ccw limit %d", n,
                    VIRTIO_CCW_QUEUE_MAX);
         return;