[docs] [issue9101] reference json format in file formats chapter

Ezio Melotti <ezio.melotti@gmail.com> added the comment: It's just a mercurial hook that sends email, and yes, it's possible to close the issues automatically writing "closes #xxxx" in the commit message, but I prefer to close the issue manually. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue9101> _______________________________________