Correction on appveyor.yml
Correction on appveyor.yml

jeremyVignelles/Vlc.DotNet,marcomeyer/Vlc.DotNet,thephez/Vlc.DotNet,briancowan/Vlc.DotNet,agherardi/Vlc.DotNet,briancowan/Vlc.DotNet,marcomeyer/Vlc.DotNet,RickyGAkl/Vlc.DotNet,ZeBobo5/Vlc.DotNet,RickyGAkl/Vlc.DotNet,thephez/Vlc.DotNet,raydtang/Vlc.DotNet,agherardi/Vlc.DotNet,raydtang/Vlc.DotNet,someonehan/Vlc.DotNet,xue-blood/wpfVlc,xue-blood/wpfVlc,someonehan/Vlc.DotNet