New review comment by Logarithmus on void-packages repository

https://github.com/void-linux/void-packages/pull/31667#discussion_r659337307

Comment:
```
rg "vdoc README" srcpkgs | wc -l
739
```
I'd like you to ask maintainers of those packages the same questions, if you are so sceptical about putting `README.md` into `/usr/doc`. I've seen this and decided to do the same.