New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/23475#discussion_r453241824

Comment:
```
It should be noted that runtime testing packages, as well as building them with the `-Q` flag or with the `XBPS_CHECK_PKGS=yes` variable in `etc/conf` is encouraged.
New packages are required to have been runtime tested.
```

What do you think?