rn-122: add Toon Claes among the helpers

Author: chriscool

rev_news/drafts/edition-122.md

@@ -753,4 +753,4 @@ Markus Jansen &lt;<[email protected]>&gt; and
 Kaartic Sivaraam &lt;<[email protected]>&gt;
 with help from Junio Hamano, Lucas Seiki Oshiro,
 Luca Milanesio, Thalia Rose, Elijah Newren,
-Bruno Brito and Štěpán Němec.
+Toon Claes, Bruno Brito and Štěpán Němec.