Presently the "GitHub =>" link on the embeddable-build-status plugin page links to the git-plugin for some reason.
I note that this page also contains a wiki macro that it shouldn't, so perhaps that's related?
This was defined in pom.xml. I've created a PR with fix, see https://github.com/jenkinsci/embeddable-build-status-plugin/pull/29
Fixed in https://github.com/jenkinsci/embeddable-build-status-plugin/pull/31