Update damage.js
Update damage.js

Add damage calculation when using Venoshock and foe is poisoned
bmeduho/honko-damagecalc,MagiaSN/honko-damagecalc,MagiaSN/honko-damagecalc,charizard8888/1v1calc,Honko/honko-damagecalc,Zarel/honko-damagecalc,GrievingTrauer/German-Showdown-Calc,GrievingTrauer/German-Showdown-Calc,charizard8888/1v1calc,Zarel/honko-damagecalc,Ununhexium20/honko-damagecalc,bmeduho/honko-damagecalc,AustinXII/honko-damagecalc,Honko/honko-damagecalc,Zarel/honko-damagecalc,Honko/honko-damagecalc,Ununhexium20/honko-damagecalc,MagiaSN/honko-damagecalc,AustinXII/honko-damagecalc