Update git submodules

* Update helpcontent2 from branch 'master'
  - tdf#121736 More Help pages on Python
    
    Entry page for examples. Comments left intentionally for
    later fill.
    
    Change-Id: Ifacad703097187180cc3909be4ba9a81f80244be
    Reviewed-on: https://gerrit.libreoffice.org/65866
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ b01f85ba

-Subproject commit fc7e8e236179562067765848ecc28e9140d5c289
+Subproject commit b01f85baef364236cb68dd0dbeb0bcb7513bd85c