Update the release issue template

This closes #628.

.github/ISSUE_TEMPLATE/release.md

@@ -8,7 +8,7 @@ labels: release
 - [ ] Set up a pull request with the release post and add it here: LINK
 - [ ] Run `make release/publish VERSION=X` in `main`, where `X` is the new version
 - [ ] Make sure the tag pipeline passes
-- [ ] Update the [AUR](https://github.com/inko-lang/archlinux) package
+- [ ] Run the [AUR release pipeline](https://github.com/inko-lang/aur/actions/workflows/release.yml), using `inko` as the package name
 - [ ] Update the [copr](https://github.com/yorickpeterse/copr/blob/main/inko) package
 - [ ] Merge the release post
 - [ ] Announce in /r/inko