fix: ENSIP-21 formatting

ensips/21.md

@@ -6,6 +6,7 @@ contributors:
 ensip:
     created: "2025-03-15"
     status: draft
+ignoredRules: ["heading:annex:-fault-tolerance"]
 ---
 
 # ENSIP-21: Batch Gateway Offchain Lookup Protocol
@@ -64,7 +65,7 @@ interface IBatchGateway {
 - `failures[i]` is `false` if a response was received according to EIP-3668, even if it was error data.
 - `failures[i]` is `true` if the request could not be completed.
     - If a HTTP error is encountered, encode the response using `HttpError`.
-    - Otherwise, encode the reason using `Error(string)`.
+    - Otherwise, encode the reason with `Error(string)`.
 - `responses[i]` is the response or error data.
 
 ## Rationale