Update git submodules
* Update helpcontent2 from branch 'master'
to
4f452d1d8432a93eb41d5d0f90c2e0b5947e0e53
- tdf#146950 Clarify slide format "screen" and "on-screen show"
+ refactor page/slide format Help pages for slides and drawings
+ drop 2 now useless pages
Change-Id: If98458246f106da509d72a4087f365dbefd08607
Reviewed-on: https://gerrit.libreoffice.org/c/help/+/142493
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>