Update git submodules

* Update helpcontent2 from branch 'master'
  - Format - Alignment path corrected as Format - Align
    
    Change-Id: I63dcb0df4dfaa229b8992f258ca7de2d08244f39
    Reviewed-on: https://gerrit.libreoffice.org/64938
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ 3db6e551

-Subproject commit d9670753a90271584daa7d8e4aed441b74349f1f
+Subproject commit 3db6e5510a0ad3a1896117b815067ddcdf2568e7