boards: update links in doc of pba-d-01-kw2x
boards: update links in doc of pba-d-01-kw2x

smlng/RIOT,kaspar030/RIOT,OTAkeys/RIOT,yogo1212/RIOT,miri64/RIOT,basilfx/RIOT,kaspar030/RIOT,authmillenon/RIOT,kYc0o/RIOT,yogo1212/RIOT,basilfx/RIOT,ant9000/RIOT,smlng/RIOT,basilfx/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,jasonatran/RIOT,ant9000/RIOT,OlegHahm/RIOT,authmillenon/RIOT,authmillenon/RIOT,kaspar030/RIOT,OTAkeys/RIOT,miri64/RIOT,ant9000/RIOT,jasonatran/RIOT,kYc0o/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,basilfx/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,OlegHahm/RIOT,miri64/RIOT,basilfx/RIOT,OTAkeys/RIOT,jasonatran/RIOT,kYc0o/RIOT,ant9000/RIOT,smlng/RIOT,authmillenon/RIOT,OTAkeys/RIOT,kaspar030/RIOT,yogo1212/RIOT,smlng/RIOT,jasonatran/RIOT,authmillenon/RIOT,authmillenon/RIOT,yogo1212/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,ant9000/RIOT,kYc0o/RIOT,miri64/RIOT,miri64/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,smlng/RIOT,yogo1212/RIOT,OlegHahm/RIOT,OlegHahm/RIOT