Update git submodules

* Update helpcontent2 from branch 'master'
  - tdf#115254 Some branch bookmarks are not working 3
    
    dialogs from chart2
    
    Change-Id: I97e08c5b8ca2200f143073abadb355da99b38b9a
    Reviewed-on: https://gerrit.libreoffice.org/57450
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ d3b6ce04

-Subproject commit 25e88166393ebf5736a38271dd33f49b69e759b9
+Subproject commit d3b6ce0424e1aa359b297c63bbd16217a2e5b747