Update git submodules

* Update helpcontent2 from branch 'master'
  - Python: fix location description / references
    
    Change-Id: I0b6339716d8a26dda84d0904c4a536d2173d3f1e
    Reviewed-on: https://gerrit.libreoffice.org/65347
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ 59404eb5

-Subproject commit c87f47920ff8524fb73ea39f5cafe42d1dc3c193
+Subproject commit 59404eb5ca76c1e9b0dc5a6fb9730bc9328b0cbf