fix powerline submodule
fix powerline submodule

DBeddows/dotfiles,ThomasKearney/dotfiles,christnil/dotfiles,tiagozuim/dotfiles,hallzy/dotfiles-1,marygale/dotfiles,ThomasKearney/dotfiles,marygale/dotfiles,tiagozuim/dotfiles,ivangeorgiew/dotfiles,Mslef/dotfiles,Mslef/dotfiles,hallzy/dotfiles-1,youleiy/dotfiles,youleiy/dotfiles,ivangeorgiew/dotfiles,DBeddows/dotfiles,vimukthiweerasiri/my_shortcuts,christnil/dotfiles,vimukthiweerasiri/my_shortcuts