Editorial: Add missing comma in acks section

inexorabletash · inexorabletash · commit 9cd66f0529fd · 2023-04-17T09:02:09.000-07:00
diff --git a/index.bs b/index.bs
@@ -6839,7 +6839,7 @@ Kyaw Tun,
 Kyle Huey,
 Laxminarayan G Kamath A,
 Maciej Stachowiak,
-Marcos Cáceres
+Marcos Cáceres,
 Margo Seltzer,
 Marijn Kruisselbrink,
 Ms2ger,
