New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/37299#discussion_r882919793

Comment:
$version should still be a variable because it changes with every update. Many maintainers prefer not to have `$pkgname` and other variables in `$distfiles` for various reasons - one is to make grep easier. $pkgname doesn't usually even save many characters and it doesn't change. It's also annoying to replace all $pkgname references in $distfiles when renaming the package for my own purposes.