towiki.sh Move vendor link to the first column.

It is not easy to see that there are two links,
one to coreboot wiki and second to the vendor page.
This change moves the vendor page link to the vendor
column, separating it nicely.

Change-Id: I3063be476231d04f833350043010a6e0001697e7
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/5593
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>