Maciej Lipinski authored Apr 14, 2020 and Grzegorz Daniluk committed May 20, 2020

- behavior for different VLAN modes was incorrect (in table and text)
- updates per changes in v6.0 were needed.

Fix build error of wrs-user-manual. This file should have been pushed
in the commit:
73f319c5

 doc/wrs-user-manual: add the description of VLANs configuration

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>