[docs] [issue12028] threading._get_ident(): remove it in the doc or make it public

Changes by STINNER Victor <victor.stinner@haypocalc.com>: ---------- title: threading._get_ident(): remove it in the doc and make it public -> threading._get_ident(): remove it in the doc or make it public _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue12028> _______________________________________