message: doc: Fix typo in getmempoolinfo
diff: // Copyright (c) 2010 Satoshi Nakamoto
  -// Copyright (c) 2009-2021 The Bitcoin Core developers
  +// Copyright (c) 2009-2022 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  #include <hash.h>
  #include <index/blockfilterindex.h>
  #include <index/coinstatsindex.h>
  +#include <logging/timer.h>
  #include <net.h>
  #include <net_processing.h>
  #include <node/blockstorage.h>
  -#include <logging/timer.h>
  #include <node/coinstats.h>
  #include <node/context.h>
  #include <node/utxo_snapshot.h>
  @@ -1616,7 +1616,7 @@ static RPCHelpMan getmempoolinfo()
  {RPCResult::Type::NUM, "size", "Current tx count"},
  {RPCResult::Type::NUM, "bytes", "Sum of all virtual transaction sizes as defined in BIP 141. Differs from actual serialized size because witness data is discounted"},
  {RPCResult::Type::NUM, "usage", "Total memory usage for the mempool"},
  - {RPCResult::Type::STR_AMOUNT, "total_fee", "Total fees for the mempool in " + CURRENCY_UNIT + ", ignoring modified fees through prioritizetransaction"},
  + {RPCResult::Type::STR_AMOUNT, "total_fee", "Total fees for the mempool in " + CURRENCY_UNIT + ", ignoring modified fees through prioritisetransaction"},
  {RPCResult::Type::NUM, "maxmempool", "Maximum memory usage for the mempool"},
  {RPCResult::Type::STR_AMOUNT, "minrelaytxfee", "Current minimum relay fee for transactions"},
  {RPCResult::Type::NUM, "unbroadcastcount", "Current number of transactions that haven't passed initial broadcast yet"}
  