This trivial patch fixes a typo in sample apps guide, in
the kernel nic interface (kni) section.
Using "-config", as it is now today in this doc, will not
work and will emit an error; it should be "--config" instead,
and this patch fixes it accordingly.
Fixes: d0dff9ba44 ("doc: sample application user guide")
Signed-off-by: Rami Rosen <rami.rosen@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
05100f3eef