Update git submodules

* Update helpcontent2 from branch 'master'
  to 2d5a11ff0c0ce386c2e6e634b620448d9e0e4824
  - (func_networkdays.xhp) Include square brackets in syntax section to indicate optional parameters.
    
    Note: Exact configuration of square brackets inferred from ODF 1.2.
    
    Change-Id: Ie607da08555aac5bc3d1a46b53f8d4b5c90d33ff
    Reviewed-on: https://gerrit.libreoffice.org/c/help/+/95203
    Tested-by: Jenkins
    Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    
diff --git a/helpcontent2 b/helpcontent2
index e028546..2d5a11f 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit e02854641f31d183f6405f9ea7ad03ff0c7a4007
Subproject commit 2d5a11ff0c0ce386c2e6e634b620448d9e0e4824