New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/35943#discussion_r819107809

Comment:
```suggestion
homepage="https://www.libssh.org/"
changelog="https://git.libssh.org/projects/libssh.git/plain/ChangeLog?h=stable-0.9"
distfiles="https://git.libssh.org/projects/libssh.git/snapshot/${pkgname}-${version}.tar.gz"
```
and get 0.9 with using `$version`