It was added by the qtquickcontrols2 merge and was out-dated. To ease
maintenance while still providing some benefit to users, let's just
link to the Qt documentation for all modules.

Fixes: QTBUG-95414
Pick-to: 6.2
Change-Id: I4e2a75158c2c813c1689f628974d544278ab4e75
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>