Only show dual category if there is more than one extruder
Only show dual category if there is more than one extruder

senttech/Cura,hmflash/Cura,hmflash/Cura,senttech/Cura,ynotstartups/Wanhao,fieldOfView/Cura,Curahelper/Cura,ynotstartups/Wanhao,totalretribution/Cura,Curahelper/Cura,totalretribution/Cura,fieldOfView/Cura