Update git submodules

* Update helpcontent2 from branch 'master'
  to 8c83d6fcf4f70c7762f9c5c4e6315856a5eb10c4
  - More small copyedits…
    
    … and drop a long-standing TODO with my name on it that I’ve forgotten about
    
    Change-Id: I91785d024c508e82bce4f27df6e955c69d02b220
    Reviewed-on: https://gerrit.libreoffice.org/c/help/+/112934
    Tested-by: Jenkins
    Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
    
diff --git a/helpcontent2 b/helpcontent2
index ee7094d..8c83d6f 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit ee7094d416ec829e7281b6a5dab0aea1d21acf59
Subproject commit 8c83d6fcf4f70c7762f9c5c4e6315856a5eb10c4