fix(subParsers/headers); fix bug introduced with noHeaderId option
fix(subParsers/headers); fix bug introduced with noHeaderId option

stevemao/showdown,snegovick/showdown,pazof/showdown,showdownjs/showdown,juanonsoftware/showdown,webutilz/showdown,phw/showdown,phw/showdown,digideskio/showdown,coolroad/showdown,xinshitn/showdown,showdownjs/showdown,NichenLg/showdown,axter/showdown,alazyer/showdown,yaniswang/showdown,snegovick/showdown,axter/showdown,twitwi/showdown,OMGgogong/showdown,OMGgogong/showdown,bsnizek/showdown,pazof/showdown,bsansouci/showdown,yaniswang/showdown,xinshitn/showdown,digideskio/showdown,webutilz/showdown,coolroad/showdown,stevemao/showdown,alazyer/showdown,bsnizek/showdown,NichenLg/showdown,twitwi/showdown,bsansouci/showdown,juanonsoftware/showdown