Update git submodules

* Update helpcontent2 from branch 'master'
  to a797d607f1d56f4e401d03669d766124317baa46
  - adjust embedding of Position header in chapter numbering help
    
    Change-Id: I0e3e5ecc78dc8747e71342edbce23358a14e71a7
    Reviewed-on: https://gerrit.libreoffice.org/c/help/+/88254
    Tested-by: Jenkins
    Reviewed-by: Seth Chaiklin <sdc.blanco@youmail.dk>
    
diff --git a/helpcontent2 b/helpcontent2
index c0f4ae8..a797d60 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit c0f4ae88b0ae0a59a0f8c3c3301f5d385a9ee750
Subproject commit a797d607f1d56f4e401d03669d766124317baa46