Updated core

Project: help  b6d54386f19adf3a6a967ae6e24a06f5473a8dca

HC3 tweaks

1) Add level to embedded headings
2) Add id= to paragraphs and headings

Change-Id: Id6ba1fe6518295e08f99bb1f28cf59c9893d8ddd
Reviewed-on: https://gerrit.libreoffice.org/32426Reviewed-by: Olivier Hallot <olivier.hallot@edx.srv.br>
Tested-by: Olivier Hallot <olivier.hallot@edx.srv.br>

helpcontent2 @ b6d54386

-Subproject commit 6f19c099aa6852d0ec0570d9f56281e7f7032f81
+Subproject commit b6d54386f19adf3a6a967ae6e24a06f5473a8dca