New review comment by Jjp137 on void-packages repository

https://github.com/void-linux/void-packages/pull/49545#discussion_r1542223342

Comment:
```suggestion
changelog="https://github.com/wesnoth/wesnoth/blob/${version}/changelog.md"
```
Wesnoth has both stable and development releases, so it might be a good idea to link directly to the version-specific changelog. The release threads on the Wesnoth forums do this. Otherwise, as 1.19 development progresses, the changelog on the master branch will describe many changes that are not present in the stable version.