Apply suggestions from code review

Co-authored-by: Michael Birch <birchmd8@gmail.com>

neps/nep-0539.md

@@ -273,7 +273,7 @@ The new chunk execution then follows this order.
     - Add the removed receipts to the outgoing receipts of the new chunk.
 4. Convert all transactions to receipts included in the chunk.
     - Local receipts, which are receipts where the sender account id is equal to
-      the receiver id, are set aside as local receipts for step 4.
+      the receiver id, are set aside as local receipts for step 5.
     - Non-local receipts up to `outgoing_gas_limit[receipt.receiver]` for the
       respective shard go to the outgoing receipts list of the chunk.
     - (new) Non-local receipts above `outgoing_gas_limit[receipt.receiver]` for