Update git submodules

* Update helpcontent2 from branch 'master'
  - Let's make the help urls more standard, and use ?Target=...&... form.
    
    Change-Id: Ic2568c769ab11e3622f71b92a46fb124012a3c90
    Reviewed-on: https://gerrit.libreoffice.org/58865
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ 049c187e

-Subproject commit 1c76993a281f99a80c4dcbcf7e2133ef2dd3db69
+Subproject commit 049c187e0503bb1f527eebb3c9a5e0d5961ee947