This is to match the configuration in Git project

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>

litdd macro is meant to replace '\--' which would be interpreted as a
long hyphen instead of double-dash. One of those so-called
simplifications that make it difficult to predict the output of
asciidoc.

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>

The project git-html-l10n awaits html files.

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>

This allows to easily export translated manpage sources in another repository.

The Makefile of Documentation in the Git project now has a dependency
to asciidoctor-extensions.rb.

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>

Signed-off-by: Matthias Aßhauer <mha1993@live.de>

This is not needed by Asciidoctor and it is not understood by asciidoc

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>