Update git submodules

* Update helpcontent2 from branch 'master'
  to 60d9df79df1071d5ad299464a4705abb237810ca
  - tdf#89131 add explanation about adding Heading rows to Insert - Table
    
    Change-Id: Ic3f9f82fad1693b60e31c331e2805a7748ce9cfe
    Reviewed-on: https://gerrit.libreoffice.org/c/help/+/135004
    Tested-by: Jenkins
    Reviewed-by: Seth Chaiklin <sdc.blanco@youmail.dk>
    
diff --git a/helpcontent2 b/helpcontent2
index bdaeee8..60d9df7 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit bdaeee88ae63c1107b6c7db0dbcabb5347554397
Subproject commit 60d9df79df1071d5ad299464a4705abb237810ca