New comment by fosslinux on void-packages repository

https://github.com/void-linux/void-packages/pull/24357#issuecomment-687093383

Comment:
Request: Can we please not accept any new packages with noarch, just not have noarch for any new packages while I prepare the rebuild; it will just make this commit much easier.

Can this be added to the Manual too? Don't really care on the exact wording but something along the lines of:

> We are in the process of transitioning away from noarch. Please no longer use noarch for new packages.