message: doc: Fix walletdisplayaddress RPC doc
diff: @@ -4717,10 +4717,11 @@ static RPCHelpMan upgradewallet()
  #ifdef ENABLE_EXTERNAL_SIGNER
  static RPCHelpMan walletdisplayaddress()
  {
  - return RPCHelpMan{"walletdisplayaddress",
  + return RPCHelpMan{
  + "walletdisplayaddress",
  "Display address on an external signer for verification.",
  {
  - {"address", RPCArg::Type::STR, RPCArg::Optional::NO, /* default_val */ "", "bitcoin address to display"},
  + {"address", RPCArg::Type::STR, RPCArg::Optional::NO, "bitcoin address to display"},
  },
  RPCResult{
  RPCResult::Type::OBJ,"","",
  