Update page-tou.pug

adding multi accounting in casual/custom against the rules

views/page-tou.pug

@@ -88,7 +88,7 @@ block content
 			br
 			h2
 				strong Gameplay
-			p These rules are mostly intended for ranked games. Practice games also follow these rules, but penalties tend to be more forgiving.
+			p These rules are mostly intended for ranked games. Practice games also follow these rules, but penalties tend to be more forgiving. However multi-accounting in Casual or custom without explicitly notifying the other players in the lobby will not be permitted.
 			h4
 				strong The following is not permitted:
 			li Intentionally playing to lose (gamethrowing).