docs: whups, add missing contributors entry

docs/contributors.rst

@@ -101,6 +101,7 @@ sponsorship and outstanding future-thinking of its early adopters.
     <ul>
     <li>Alex Willmer</li>
     <li><a href="https://underwhelm.net/">Dan Dorman</a> &mdash; - <em>When I truly understand my enemy … then in that very moment I also love him.</em></li>
+    <li>Daniel Foerster</li>
     <li><a href="https://www.deps.co/">Deps</a> &mdash; <em>Private Maven Repository Hosting for Java, Scala, Groovy, Clojure</em></li>
     <li><a href="https://www.edport.co.uk/">Edward Wilson</a> &mdash; <em>To efficiency and beyond! I wish Mitogen and all who sail in her the best of luck.</em></li>
     <li><a href="https://www.epartment.nl/">Epartment</a></li>