appveyor: use the proper wget option
appveyor: use the proper wget option

plugz/qlcplus,sbenejam/qlcplus,nedmech/qlcplus,sbenejam/qlcplus,sbenejam/qlcplus,plugz/qlcplus,mcallegari/qlcplus,kripton/qlcplus,mcallegari/qlcplus,mcallegari/qlcplus,mcallegari/qlcplus,kripton/qlcplus,nedmech/qlcplus,kripton/qlcplus,plugz/qlcplus,sbenejam/qlcplus,plugz/qlcplus,kripton/qlcplus,kripton/qlcplus,sbenejam/qlcplus,nedmech/qlcplus,plugz/qlcplus,mcallegari/qlcplus,kripton/qlcplus,sbenejam/qlcplus,kripton/qlcplus,plugz/qlcplus,mcallegari/qlcplus,plugz/qlcplus,mcallegari/qlcplus,nedmech/qlcplus,sbenejam/qlcplus,nedmech/qlcplus,nedmech/qlcplus