[vim] Update the `html5` custom snippet
[vim] Update the `html5` custom snippet

Ref: https://github.com/h5bp/html5-boilerplate/issues/1656#issuecomment-77274567

makabde/dotfiles,AlbertoElias/dotfiles,girishramnani/dotfiles,girishramnani/dotfiles,AlbertoElias/dotfiles,wingy3181/dotfiles,EDiLD/dotfiles,makabde/dotfiles,oddlord/dotfiles,pbrooks/dotfiles,newtonne/dotfiles,EDiLD/dotfiles,b-boogaard/dotfiles,zlot/dotfiles,wingy3181/dotfiles,mickael83/ubuntu-dotfiles,christophermoura/dotfiles,newtonne/dotfiles,wingy3181/dotfiles,sophatvathana/dotfiles,christophermoura/dotfiles,khornberg/dotfiles,zlot/dotfiles,mickael83/ubuntu-dotfiles