Clean up per review comments

src/engine/specification.md

@@ -475,19 +475,15 @@ This method follows the same specification as [`engine_forkchoiceUpdatedV1`](#en
 #### Response
 
 * result: `object`
-  - `executionPayloadV2`: [`ExecutionPayloadV2`](#ExecutionPayloadV2)
+  - `executionPayload`: [`ExecutionPayloadV2`](#ExecutionPayloadV2)
   - `blockValue` : `QUANTITY`, 256 Bits - The expected value to be recieved by the `feeRecipient` in wei
 * error: code and message set in case an exception happens while getting the payload.
 
 #### Specification
 
-1. Given the `payloadId` client software **MUST** return the most recent version of the payload that is available in the corresponding build process at the time of receiving the call.
-
-2. The call **MUST** return `-38001: Unknown payload` error if the build process identified by the `payloadId` does not exist.
-
-3. Client software **MAY** stop the corresponding build process after serving this call.
+This method follows the same specification as [`engine_getPayloadV1`](#engine_getpayloadv1) with the addition of the following:
 
-4. Client software **MAY** use the sum of the block's priority fees or any other algorithm to determine `blockValue`.
+  1. Client software **MAY** use the sum of the block's priority fees or any other algorithm to determine `blockValue`.
 
 ### engine_exchangeTransitionConfigurationV1