doc: update szedata2 guide
doc: update szedata2 guide

NICs are available from Netcope under the names NFB-*.
Change names and direct the links to Netcope web.

Signed-off-by: Matej Vido <ac8e331e315f66a9d28825fbbbe43048aafa6351@cesnet.cz>
Acked-by: John McNamara <af31595c36a4239b9676e9b3a777d3e2f15a6c4d@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk