JSON: fix: cone angle sign inverted compared to description (CURA-869)
JSON: fix: cone angle sign inverted compared to description (CURA-869)

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