[Python-checkins] Fix minor markup typo (#5407)

[Raymond Hettinger]

https://github.com/python/cpython/commit/2a3260bb030b0d4620242110c0ee5abc379afa8d
commit: 2a3260bb030b0d4620242110c0ee5abc379afa8d
branch: master
author: cocoatomo <cocoatomo77 at gmail.com>
committer: Raymond Hettinger <rhettinger at users.noreply.github.com>
date: 2018-01-29T00:30:48-08:00
summary:

Fix minor markup typo (#5407)

files:
M Doc/library/functions.rst

diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index e47225718c1b..bfb813cf3906 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1423,7 +1423,7 @@ are always available.  They are listed here in alphabetical order.
    a regular function and do something with its result.  This is needed
    in some cases where you need a reference to a function from a class
    body and you want to avoid the automatic transformation to instance
-   method.  For these cases, use this idiom:
+   method.  For these cases, use this idiom::
 
       class C:
           builtin_open = staticmethod(open)