Update git submodules

* Update helpcontent2 from branch 'master'
  - Fix a typo found by Andrea Gelmini
    
    -reformatting part
    
    Change-Id: If12a0361a9b47878b7df0f562154931437e59fc6
    Reviewed-on: https://gerrit.libreoffice.org/57827
    Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
    

helpcontent2 @ c8d84020

-Subproject commit c93d46dafd476233cde4a84bc1527b317ce7854d
+Subproject commit c8d840200ba0175a09e5f6c68385f56e09c235ec