[docs] [issue18707] the readme should also talk about how to build doc.

Éric Araujo added the comment: Thanks for the patch! One thing: Doc/README.txt does not actually mention how to contribute to the doc, does it? Maybe the main README should link to the devguide instead of or in addition to Doc/README.txt ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue18707> _______________________________________