fix typo in $nor operator reference
fix typo in $nor operator reference

m4rcsch/lithium-core-library,wbeater/lithium,pixelcog/lithium,UnionOfRAD/lithium,davidpersson/lithium,muyehub/lithium,whowgames/lithium,jails/lithium,m4rcsch/lithium-core-library,SensCritique/lithium,SensCritique/lithium,pixelcog/lithium,datachand/lithium,davidpersson/lithium,jails/lithium,mehlah/lithium,wbeater/lithium,muyehub/lithium,UnionOfRAD/lithium,whowgames/lithium,mehlah/lithium,graphis/lithium,datachand/lithium,graphis/lithium