add prominent link to scala-ci from doc
add prominent link to scala-ci from doc
lrytz/scala-jenkins-infra,scala/scala-jenkins-infra,retronym/scala-jenkins-infra,retronym/scala-jenkins-infra,scala/scala-jenkins-infra,adriaanm/scala-jenkins-infra,lrytz/scala-jenkins-infra,adriaanm/scala-jenkins-infra,adriaanm/scala-jenkins-infra,lrytz/scala-jenkins-infra,retronym/scala-jenkins-infra