The HTTPS links fail in Qt Assistant on Windows as the
qt installation package includes qt libraries that are
built without SSL support for legal reasons.

Task-number: QTBUG-31073
Change-Id: I86909abadb1e8164749d924cc53ee05aa57f8f31
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>