Fix typo in SESSION_REDIS configuration
Fix typo in SESSION_REDIS configuration

ostcar/OpenSlides,OpenSlides/OpenSlides,jwinzer/OpenSlides,jwinzer/OpenSlides,CatoTH/OpenSlides,normanjaeckel/OpenSlides,tsiegleauq/OpenSlides,OpenSlides/OpenSlides,CatoTH/OpenSlides,jwinzer/OpenSlides,tsiegleauq/OpenSlides,FinnStutzenstein/OpenSlides,ostcar/OpenSlides,CatoTH/OpenSlides,jwinzer/OpenSlides,normanjaeckel/OpenSlides,tsiegleauq/OpenSlides,jwinzer/OpenSlides,FinnStutzenstein/OpenSlides,ostcar/OpenSlides,CatoTH/OpenSlides,FinnStutzenstein/OpenSlides,FinnStutzenstein/OpenSlides,normanjaeckel/OpenSlides,normanjaeckel/OpenSlides