correct HTML strucutre

Change-Id: I5b731612400fd072d3fe287ac556ba23b2ae1fb9
Reviewed-on: https://gerrit.libreoffice.org/11168
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>