Update passwd.md
Update passwd.md

Added info about the {{options}} flag, as requested.

felixonmars/tldr,AgamAgarwal/tldr,bradparks/tldr,slash3b/tldr,danieldiekmeier/tldr,Qtrain/tldr,davidsiefert/tldr,lord63-forks/tldr,jeremyruppel/tldr,ArturSkowronski/tldr,Phizho/tldr,felixonmars/tldr,ostera/tldr,davidsiefert/tldr,zoisom/tldr,kuanyui/tldr,mshmoustafa/tldr,lord63-forks/tldr,slash3b/tldr,igorshubovych/tldr,cptdeka10/tldr,rubenvereecken/tldr,cdminigun/tldr,felixonmars/tldr,jeremyruppel/tldr,katekyan/tldr,NegaMorgan/tldr,cptdeka10/tldr,deekim/tldr,kuanyui/tldr,UncommonPleb/tldr,mshmoustafa/tldr,Parth-Mehrotra/tldr,WANG-lp/tldr,zoisom/tldr,katekyan/tldr,NegaMorgan/tldr,cdminigun/tldr,slash3b/tldr,WALL-E/tldr,AgamAgarwal/tldr,UncommonPleb/tldr,igorshubovych/tldr,Qtrain/tldr,bradparks/tldr,WANG-lp/tldr,deekim/tldr,WALL-E/tldr,e0i/tldr,e0i/tldr,Phizho/tldr,Phizho/tldr,ArturSkowronski/tldr,danieldiekmeier/tldr,UncommonPleb/tldr,deekim/tldr,katekyan/tldr,zoisom/tldr,cptdeka10/tldr,ostera/tldr,Parth-Mehrotra/tldr,rubenvereecken/tldr