Replace the text "offer software in other formats in the future"
The future is now! We already make use of flatpaks through
gnome-software (and other formats too), so saying that this will
happen "in the future" is just confusing. Instead, say that good
packaging practices *should* be used in that case too. If we have
guidelines appropriate for specific types (e.g. for flatpaks), we should
add the links here.