QAudioDevice shows incorrect (old Qt5) QMediaDevices usage

In https://doc.qt.io/qt-6/qaudiodevice.html#details, the example showing how to enumerate all audio output devices contains the following code snippet:

const auto deviceInfos = QMediaDevices::availableDevices(QAudioDevice::Output);
for (const QAudioDevice &deviceInfo : deviceInfos)
    qDebug() << "Device: " << deviceInfo.description();

This is not correct and appears to be a remnant of the Qt5 QAudioDeviceInfo API.

QMediaDevices does not have an "availableDevices" method. The correct example should be:

const auto deviceInfos = QMediaDevices::audioOutputs(); 
for (const QAudioDevice &deviceInfo : deviceInfos)
    qDebug() << "Device: " << deviceInfo.description();

It is especially important to get these examples correct because migrating QtMultimedia code from Qt5 to Qt6 is already fairly confusing as-is due to various reasons.

Minor note: The variables should probably be named "devices" and "device" as well, just for consistency's sake (another Qt5 remnant, where these were QAudioDeviceInfos instead of QAudioDevices).