boards/phynode-kw41z: fix broken links
boards/phynode-kw41z: fix broken links

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