Update git submodules

* Update helpcontent2 from branch 'master'
  - Cleanups in /shared/02/011*.xhp files
    
    Change-Id: I0a41efdc51a2696936235d614c9044e929b3a2b2
    Reviewed-on: https://gerrit.libreoffice.org/57126
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ fc5f8a12

-Subproject commit 74c9d7319c3f4933072df0723c42d75d36c80416
+Subproject commit fc5f8a12d823ed3840a5c349b4fa44115e71fd87