Doc: Updated usage of \qmlmodule and \inqmlmodule.

-\qmlmodule denotes the import statement "QtMultimedia 5.0"
-\inqmlmodule shouldn't have the version number and this commits removes
it because it is confusing.

Task-number: QTBUG-32172
Change-Id: I76f58ddd5ea2d5ae51eaae83a8408fd67611838a
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Removing version number from the QDoc comments.

The version is not needed anymore and QDoc handles them as a different
module, causing errors.

Task-number: QTBUG-32172
Change-Id: I55054a6c7bce9e001ef03cce944b03375c851d15
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>