[docs] [issue31621] Pluralization typo in Language Reference section 7.12

[Kevin]

New submission from Kevin <kevin.m.smiley at gmail.com>:

The documentation for the `global` statement contains the line:

 > CPython implementation detail: The current implementation does not enforce some of these restriction [...]

"restriction" should be "restrictions" since there is more than one of them.

Attached is a copy of `simple_stmts.rst` with the proposed one-letter change.

----------
assignee: docs at python
components: Documentation
files: simple_stmts_pluralized.rst
messages: 303266
nosy: docs at python, kms70847
priority: normal
severity: normal
status: open
title: Pluralization typo in Language Reference section 7.12
versions: Python 3.6, Python 3.7
Added file: https://bugs.python.org/file47175/simple_stmts_pluralized.rst

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31621>
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