Update git submodules

* Update helpcontent2 from branch 'libreoffice-6-1'
  - tdf#115524 Some branch bookmarks are not working 2
    
    simpress and sdraw modules
    
    Change-Id: I5d498cb7ab504277a54f6d002e1f8e88ce78ab0c
    Reviewed-on: https://gerrit.libreoffice.org/57427
    Tested-by: Jenkins
    Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    
diff --git a/helpcontent2 b/helpcontent2
index e41b7db..739c3a4 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit e41b7db0240b8c99741ff699e0fc0d787b443bf4
Subproject commit 739c3a473815ec31c9e5536ade28a6b0d011a572