Update git submodules

* Update helpcontent2 from branch 'master'
  - Improve scripts legibility for Python newbies
    
    Change-Id: I6adee2c58d4030c433a9fdf0c070069264564742
    Reviewed-on: https://gerrit.libreoffice.org/67439
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ e3a09f8b

-Subproject commit e3dd1cb6d3b006c7db6e28e702f86ee229f2e301
+Subproject commit e3a09f8bc5c2276f3484a891b18b7da615160acb