docs: challenger typo

specs/challenger.md

@@ -73,7 +73,7 @@ to each of the different game types. For specification of dispute game types, se
   created by the `DisputeGameFactory` is equal to the output root of their `rollup-node` at the game's `l2BlockNumber`.
   - If it is, the Challenger should sign the [EIP-712 typeHash](./dispute-game.md) of the struct containing the
     `AttestationDisputeGame`'s `rootClaim` and `l2BlockNumber`. The Challenger should then submit the abi-encoded
-    signature to the `AttetationDisputeGame`'s `challenge` function.
+    signature to the `AttestationDisputeGame`'s `challenge` function.
   - If it is not, the Challenger should do nothing in support of this dispute game.
   ![Attestation `DisputeGameCreated` Diagram](./assets/challenger_attestation_dispute_game_created.png)