Update git submodules

* Update helpcontent2 from branch 'master'
  to 55d4e405d8dbdf58ba45823b3895e8a79e5a8aed
  - '\n' in replacement field only applies to Writer
    
    Change-Id: I2870a497dd57aa2c0141ac582591e7fdb4127b46
    Reviewed-on: https://gerrit.libreoffice.org/c/help/+/94000
    Tested-by: Jenkins
    Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
    
diff --git a/helpcontent2 b/helpcontent2
index e21698f..55d4e40 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit e21698f795b4098ecccf3119e23edd3d9e7aac1e
Subproject commit 55d4e405d8dbdf58ba45823b3895e8a79e5a8aed