fix specs lint

specs/challenger.md

@@ -43,7 +43,7 @@ The Challenger agent is expected to be able to listen for and respond to several
 on the data availability layer. These events and responses are parameterized depending on the type
 of dispute game being played, and the Challenger listens to different events and responds uniquely
 to each of the different game types. For specification of dispute game types, see the
-[Dispute Game Interfaces specification](./dispute-game-interfaces.md) and
+[Dispute Game Interfaces specification](./dispute-game-interface.md) and
 [Dispute Game specification](./dispute-game.md).
 
 ### `GameType.FAULT`