Add missing braces so slicing from command line works again
Add missing braces so slicing from command line works again

fxtentacle/CuraEngine,mspark93/CuraEngine,alephobjects/CuraEngine,alex1818/CuraEngine,uus169/CuraEngine,ROBO3D/CuraEngine,Ultimaker/CuraEngine,derekhe/CuraEngine,fxtentacle/CuraEngine,fxtentacle/CuraEngine,mspark93/CuraEngine,alex1818/CuraEngine,derekhe/CuraEngine,uus169/CuraEngine,uus169/CuraEngine,alephobjects/CuraEngine,patrick3coffee/CuraTinyG,pratikshashroff/pcura,markwal/CuraEngine,ROBO3D/CuraEngine,patrick3coffee/CuraTinyG,electrocbd/CuraEngine,pratikshashroff/pcura,jacobdai/CuraEngine-1,jacobdai/CuraEngine-1,ROBO3D/CuraEngine,Ultimaker/CuraEngine,markwal/CuraEngine,electrocbd/CuraEngine,foosel/CuraEngine,totalretribution/CuraEngine,jacobdai/CuraEngine-1,markwal/CuraEngine,alex1818/CuraEngine,alephobjects/CuraEngine,mspark93/CuraEngine,electrocbd/CuraEngine,foosel/CuraEngine,totalretribution/CuraEngine,derekhe/CuraEngine,patrick3coffee/CuraTinyG,totalretribution/CuraEngine,pratikshashroff/pcura,foosel/CuraEngine