[docs] [issue12148] Clarify "or-ing together" doctest option flags

Caelyn McAulay added the comment: I grepped for 's together' and found two instances of "or's together" in the docs which I reworded to use bitwise-or instead, in the attached patch. ---------- keywords: +patch nosy: +math_foo Added file: http://bugs.python.org/file34938/issue12148.patch _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue12148> _______________________________________