Update open-positions.html
Update open-positions.html

Corrected the link for the NT1 sysadm position
neicnordic/experimental.neic.nordforsk.org,neicnordic/neic.no,neicnordic/neic.no,neicnordic/experimental.neic.nordforsk.org,neicnordic/experimental.neic.nordforsk.org,neicnordic/neic.no