Update git submodules

* Update helpcontent2 from branch 'master'
  - Related: tdf#121173 double spaces in sentences
    
    Change-Id: I2286dcecc52a6dafd8075a211161a16d5a637686
    Reviewed-on: https://gerrit.libreoffice.org/64933
    Tested-by: Jenkins
Reviewed-by: Sophie Gautier <gautier.sophie@gmail.com>
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ bab5603f

-Subproject commit 62ecec5be137df3f361dcd8184f199f514787809
+Subproject commit bab5603f2ffea0079fad86192d7feb6a7b0596fe