[issue22725] improve documentation for enumerate() (built-in function)

[Ezio Melotti]

Changes by Ezio Melotti <ezio.melotti at gmail.com>:


----------
nosy: +ezio.melotti
versions: +Python 3.4, Python 3.6 -Python 3.3

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22725>
_______________________________________