README: Fix indentation of ProgressBar line
README: Fix indentation of ProgressBar line

directhex/xwt,steffenWi/xwt,iainx/xwt,akrisiun/xwt,sevoku/xwt,hwthomas/xwt,mono/xwt,cra0zy/xwt,antmicro/xwt,mminns/xwt,lytico/xwt,mminns/xwt,hamekoz/xwt,TheBrainTech/xwt,residuum/xwt