New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/39721#discussion_r1025472593

Comment:
`URL>FILENAME` will download from URL and call the result FILENAME. the `monero` distfile in this package already does this. This is not usually necessary because sources are stored under hostdir/sources/$pkgname-$version/FILENAME, so clashes can only happen if a package has multiple distfiles that happen to have the same filename. This will not happen here, but it will be quite messy, so I suggested to use `rapidjson-${_rapidjson_gitrev}.tar.gz` instead of just `<hash>.tar.gz`