[docs] Incorrect (misleading) statement in the execution model documentation (issue 24129)

[ericsnowcurrently at gmail.com]

http://bugs.python.org/review/24129/diff/14851/Doc/reference/executionmodel.rst
File Doc/reference/executionmodel.rst (right):

http://bugs.python.org/review/24129/diff/14851/Doc/reference/executionmodel.rst#newcode148
Doc/reference/executionmodel.rst:148: Free variables follow the normal
rules for name resolution,
It may be more clear to say:

These references follow the normal rules for name resolution with one
exception.  Unbound local variables are looked up in the global
namespace. ...

http://bugs.python.org/review/24129/diff/14851/Doc/reference/executionmodel.rst#newcode149
Doc/reference/executionmodel.rst:149: while unbound local variables are
looked up in the global namespace.
If we stick with the current working, I'd suggest starting a new
sentence at "while".

http://bugs.python.org/review/24129/