Docs: Update documentation about orientation mode in the gallery example

The gallery example depends on two factor to determine its orientation.
Apart from size of the window, the orientation configuration in the
setting (introduced in the patchset
7c7e3a1fdfa0a9cd766182836328ae5f179569ae) would also be considered.

This patchset updates documentation for the change mentioned above.

Pick-to: 6.6 6.5
Change-Id: Iaf46c5cc49350e889121b3e57dc3f86e46609459
Reviewed-by: Juho Lääkkö <juho.laakko@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

0 files changed, 0 insertions, 0 deletions