fix(解决bug145993): 【多端协同】点击多端协同应用窗口菜单-帮助选项，用户手册中无“多端协同”应用相关介绍

ui/view/titlebar.cpp

@@ -222,7 +222,7 @@ void Titlebar::initHelp()
     QString service_name = "com.kylinUserGuide.hotel_" + QString::number(getuid());
     QDBusMessage msg = QDBusMessage::createMethodCall(QString(service_name), KYLIN_USER_GUIDE_PATH,
                                                       KYLIN_USER_GUIDE_INTERFACE, "showGuide");
-    msg << "kylin-mobile-assistant";
+    msg << "kylin-connectivity";
     if (QDBusConnection::sessionBus().isConnected())
         QDBusConnection::sessionBus().call(msg);
 }