Add back "qBittorrent" in program updater title, closes #3549.

src/gui/mainwindow.cpp

@@ -1460,7 +1460,7 @@ void MainWindow::handleUpdateCheckFinished(bool update_available, QString new_ve
 {
     QMessageBox::StandardButton answer = QMessageBox::Yes;
     if (update_available) {
-        answer = QMessageBox::question(this, tr("Update Available"),
+        answer = QMessageBox::question(this, tr("qBittorrent Update Available"),
                                        tr("A new version is available.\nUpdate to version %1?").arg(new_version),
                                        QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
         if (answer == QMessageBox::Yes) {
@@ -1470,7 +1470,7 @@ void MainWindow::handleUpdateCheckFinished(bool update_available, QString new_ve
         }
     }
     else if (invokedByUser) {
-        QMessageBox::information(this, tr("Already Using the Latest Version"),
+        QMessageBox::information(this, tr("Already Using the Latest qBittorrent Version"),
                                  tr("No updates available.\nYou are already using the latest version."));
     }
     sender()->deleteLater();