fix: [stix2 export] Fixed Custom object type typo
fix: [stix2 export] Fixed Custom object type typo

FloatingGhost/MISP,devnull-/MISP,devnull-/MISP,MISP/MISP,Rafiot/MISP,SteveClement/MISP,devnull-/MISP,FloatingGhost/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,Rafiot/MISP,MISP/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,MISP/MISP,SteveClement/MISP,devnull-/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,Rafiot/MISP,FloatingGhost/MISP,SteveClement/MISP,Rafiot/MISP,SteveClement/MISP