Update git submodules

* Update helpcontent2 from branch 'master'
  - Spelling offence made to BeanShell requires correction
    
    + link cleanup
    
    Change-Id: If186f97bfd4ae8c4ccc2220ea8af9f1a6d1d8a2d
    Reviewed-on: https://gerrit.libreoffice.org/68064
    Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
    

helpcontent2 @ f134b8cd

-Subproject commit 794ae7722052440c8ea19b039cd229542d1f0ea5
+Subproject commit f134b8cd96bcbff338b60d28347328d0e63d67c9