[cbi-website] Broken link to maven-plugins documentation

The following link in the docs is currently broken.

https://github.com/eclipse-cbi/cbi-website/blob/ff4892cfcf077164ebb0fe4801a22c590523ed1c/signing-services/maven-plugins/index.html#L2944

Specifically I am trying to find the current version of this link from web.archive.org: https://web.archive.org/web/20230923235310/https://www.eclipse.org/cbi/sitedocs/eclipse-macsigner-plugin/sign-mojo.html

Original Issue: GitHub Issue #2