Update git submodules

* Update helpcontent2 from branch 'master'
  - tdf#115254 Some branch bookmarks are'nt working 24
    
    Module reportdesign
    
    Change-Id: Iefdc13ab35e4ac475f93b76d6b9bb9b202985c8b
    Reviewed-on: https://gerrit.libreoffice.org/60510
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ af87b7e3

-Subproject commit a12d38ca28346952fbaca910197a50cd190ce188
+Subproject commit af87b7e316a3db00c565fa31b95f19f36697b6be