sys/clif: fix typos
sys/clif: fix typos

x3ro/RIOT,x3ro/RIOT,yogo1212/RIOT,aeneby/RIOT,toonst/RIOT,josephnoir/RIOT,x3ro/RIOT,kYc0o/RIOT,josephnoir/RIOT,ant9000/RIOT,miri64/RIOT,mtausig/RIOT,basilfx/RIOT,kaspar030/RIOT,yogo1212/RIOT,toonst/RIOT,authmillenon/RIOT,josephnoir/RIOT,ant9000/RIOT,OTAkeys/RIOT,smlng/RIOT,basilfx/RIOT,kYc0o/RIOT,authmillenon/RIOT,authmillenon/RIOT,kaspar030/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,smlng/RIOT,authmillenon/RIOT,miri64/RIOT,josephnoir/RIOT,basilfx/RIOT,yogo1212/RIOT,mtausig/RIOT,ant9000/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,ant9000/RIOT,kYc0o/RIOT,aeneby/RIOT,mtausig/RIOT,yogo1212/RIOT,jasonatran/RIOT,miri64/RIOT,OlegHahm/RIOT,toonst/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,kaspar030/RIOT,x3ro/RIOT,basilfx/RIOT,aeneby/RIOT,OTAkeys/RIOT,ant9000/RIOT,aeneby/RIOT,x3ro/RIOT,OlegHahm/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,yogo1212/RIOT,smlng/RIOT,smlng/RIOT,miri64/RIOT,smlng/RIOT,OlegHahm/RIOT,kaspar030/RIOT,kaspar030/RIOT,kYc0o/RIOT,toonst/RIOT,basilfx/RIOT,mtausig/RIOT,josephnoir/RIOT,authmillenon/RIOT,OlegHahm/RIOT,yogo1212/RIOT,authmillenon/RIOT,OTAkeys/RIOT,jasonatran/RIOT,OTAkeys/RIOT,miri64/RIOT,aeneby/RIOT,toonst/RIOT,mtausig/RIOT,OTAkeys/RIOT,jasonatran/RIOT