Update git submodules

* Update helpcontent2 from branch 'master'
  - Removed executable permission on SVG file
    
    Change-Id: Id70e4005d576fc9b13589aa53ade1cc211f6f3e3
    Reviewed-on: https://gerrit.libreoffice.org/66960
    Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
    

helpcontent2 @ e0909dba

-Subproject commit 3f27275900a441c45af6c7e91901c98def81623a
+Subproject commit e0909dbaa69b546d27b5aa52befd1df99085d950