message: fix the help message for rpc example port
diff: @@ -517,7 +517,7 @@ std::string HelpExampleCli(const std::string& methodname, const std::string& arg
  std::string HelpExampleRpc(const std::string& methodname, const std::string& args)
  {
  return "> curl --user myusername --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", "
  - "\"method\": \"" + methodname + "\", \"params\": [" + args + "] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/\n";
  + "\"method\": \"" + methodname + "\", \"params\": [" + args + "] }' -H 'content-type: text/plain;' http://127.0.0.1:3889/\n";
  }
  void RPCSetTimerInterfaceIfUnset(RPCTimerInterface *iface)
  