Changing URL link in email success notification

I wish to change the email notication on a succesful  build so that clicking on the link in the email takes me to the changelog tab instead of the built result page

The curent line in build_started.ftl is

    Build <b>${project.name?html} :: ${buildType.name?html}</b> <a href='${link.buildResultsLink}'><@common.short_build_info build/></a> started

I want to change it to something like this

    Build <b>${project.name?html} :: ${buildType.name?html}</b> <a href='${link.buildChangeLogLink}'><@common.short_build_info build/></a> started

But that does not work
Where can a find a list of the avaitable links   that can be used  ?



Thanks Stewart