qtwebchannel examples - nodejs/chatclient.js use 'dialog' instead 'core'

Hello,

based on README, webchannel client  
 - .../5.12.0/Src/qtwebchannel/examples/webchannel/nodejs/chatclient.js 
example should cooperate with webchannel server
 - .../5.12.0/Src/qtwebchannel/examples/webchannel/standalone/main.cpp

chatclient.js use 'dialog', but server standalone/main.cpp expose 'core' as object: 

Core core(&dialog);
channel.registerObject(QStringLiteral("core"), &core);

This helps:

— a/Qt/qt5examples/qtwebchannel/qtwebchannel_examples/nodejs/chatclient.js
+++ b/Qt/qt5examples/qtwebchannel/qtwebchannel_examples/nodejs/chatclient.js
@@ -85,7 +85,7 @@ var createWebChannel = function(transport, rlif) {
// i.e. the server wants to 'send text'.
// This can be confusing, as we connect to the signal
// to receive incoming messages on our side

• channel.objects.dialog.sendText.connect(function(message) {
  + channel.objects.core.sendText.connect(function(message) {
  process.stdout.cursorTo(0);
  process.stdout.clearLine(0);
  console.log(' << ' + message);
  @@ -107,7 +107,7 @@ var createWebChannel = function(transport, rlif) {
  // is called with our message.
  // Again the naming is for the server side,
  // i.e. the slot is used by the server to receive text.
• channel.objects.dialog.receiveText(l);
  + channel.objects.core.receiveText(l);
  console.log(' >> ' + l);
  }
  rlif.prompt();

Thanks