Qt core docs: io.html says it lists 'Qt Core' classes but actually from other modules

The page https://doc-snapshots.qt.io/qt6-dev/io.html (Qt 6.6.0 ('dev' branch)

Says:

These Qt Core classes are used to handle input and output to and from external devices, processes, files etc. as well as manipulating files and directories.

But actually lists:

QImageReader, QImageWriter, QTextDocumentWriter from Qt GUI module;

Qt3DRender::QSceneLoader from Qt 3D Render module.

Also this is a case for Qt 5 documentation:
https://doc.qt.io/qt-5/io.html

Expected result:
This page should not list classes from the other modules, or clearly stated they are outside of Qt Core module.