While fixing unwanted escaping in code blocks, it was noticed that in Markdown export, code spans were being emitted for preformatted text paragraphs even though they appeared within a single code block. Change-Id: Ifc538e14f5ad14a2c326b726a3036c623701a823 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/207399 Reviewed-by: Hossein <hossein@libreoffice.org> Tested-by: Jenkins Tested-by: Hossein <hossein@libreoffice.org>