New comment by mobinmob on void-packages repository

https://github.com/void-linux/void-packages/pull/25743#issuecomment-791583899

Comment:
There is now an unofficial repo that contains `boot-66serv` and `void-66services` packages. The package versions are in the following format:
`upstream.version.number.0.builddate`
Currently, that is` 2.3.0.0.20210305` for the `boot-66serv `package and `0.0.2.0.20210305` for the `void-66services` package.
The [documentation](https://github.com/mobinmob/void-66-services/blob/devel/conf/void-66-conf.md) has been updated with information on how to enable and use the repo.