Update git submodules

* Update helpcontent2 from branch 'master'
  to aa623cdddae3b09e3891d50ce321f695d43e1397
  - tdf#132643 Translate German section IDs
    
    Change-Id: Ia3ee1aeb5c74b7b4871f6bbe5cfef89d54570a2c
    Reviewed-on: https://gerrit.libreoffice.org/c/help/+/112497
    Tested-by: Jenkins
    Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    
diff --git a/helpcontent2 b/helpcontent2
index ff28bce..aa623cd 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit ff28bcefe403cbcd31fb27de8db7af8dd437473e
Subproject commit aa623cdddae3b09e3891d50ce321f695d43e1397