Add example. Fix spelling. Fix patch attribution.
diff --git a/Doc/whatsnew/3.1.rst b/Doc/whatsnew/3.1.rst
index 592e930..c1f83f0 100644
--- a/Doc/whatsnew/3.1.rst
+++ b/Doc/whatsnew/3.1.rst
@@ -158,10 +158,14 @@
(Contributed by Kevin Walzer and Guilherme Polo; :issue:`2618` and
:issue:`2983`.)
-* The :class:`gzip.GzipFile` and :class:`bz2.BZ2File` classs now support
- the context manager protocol.
+* The :class:`gzip.GzipFile` and :class:`bz2.BZ2File` classes now support
+ the context manager protocol::
- (Contributed by Jacques Frechet; :issue:`4272`.)
+ >>> # Automatically close file after writing
+ >>> with gzip.GzipFile(filename, "wb") as f:
+ ... f.write(b"xxx")
+
+ (Contributed by Antoine Pitrou.)
* The :mod:`Decimal` module now supports two new methods to create a
decimal object that from a binary :class:`float`. The conversion is