rn-138: add D. Ben Knoble among the helpers

Author: chriscool

_posts/2026-08-31-edition-138.markdown

@@ -561,4 +561,5 @@ Christian Couder &lt;<christian.couder@gmail.com>&gt;,
 Jakub Narębski &lt;<jnareb@gmail.com>&gt;,
 Markus Jansen &lt;<mja@jansen-preisler.de>&gt; and
 Kaartic Sivaraam &lt;<kaartic.sivaraam@gmail.com>&gt;
-with help from Simone Arpe, Štěpán Němec and Tuomas Ahola.
+with help from Simone Arpe, Štěpán Němec, D. Ben Knoble and
+Tuomas Ahola.