New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/34556#discussion_r770082804

Comment:
```suggestion
homepage="https://gns3.com"
changelog="https://raw.githubusercontent.com/GNS3/gns3-gui/master/CHANGELOG"
distfiles="https://github.com/GNS3/${pkgname}/archive/v${version}.tar.gz"
```