message: wallet: Fixup rescanblockchain result doc
diff: @@ -3408,12 +3408,12 @@ UniValue rescanblockchain(const JSONRPCRequest& request)
  "\nRescan the local blockchain for wallet related transactions.\n",
  {
  {"start_height", RPCArg::Type::NUM, /* opt */ true, /* default_val */ "0", "block height where the rescan should start"},
  - {"stop_height", RPCArg::Type::NUM, /* opt */ true, /* default_val */ "tip height", "the last block height that should be scanned"},
  + {"stop_height", RPCArg::Type::NUM, /* opt */ true, /* default_val */ "", "the last block height that should be scanned. If none is provided it will rescan up to the tip at return time of this call."},
  },
  RPCResult{
  "{\n"
  - " \"start_height\" (numeric) The block height where the rescan has started. If omitted, rescan started from the genesis block.\n"
  - " \"stop_height\" (numeric) The height of the last rescanned block. If omitted, rescan stopped at the chain tip.\n"
  + " \"start_height\" (numeric) The block height where the rescan has started.\n"
  + " \"stop_height\" (numeric) The height of the last rescanned block.\n"
  "}\n"
  },
  RPCExamples{
  