bpo-33297: Mention Pillow to work with more image formats. (#6505)
Also update PIL doc references to Pillow.
diff --git a/Doc/distutils/introduction.rst b/Doc/distutils/introduction.rst
index 8f46bd7..a385559 100644
--- a/Doc/distutils/introduction.rst
+++ b/Doc/distutils/introduction.rst
@@ -193,8 +193,8 @@
module distribution
a collection of Python modules distributed together as a single downloadable
resource and meant to be installed *en masse*. Examples of some well-known
- module distributions are NumPy, SciPy, PIL (the Python Imaging
- Library), or mxBase. (This would be called a *package*, except that term is
+ module distributions are NumPy, SciPy, Pillow,
+ or mxBase. (This would be called a *package*, except that term is
already taken in the Python context: a single module distribution may contain
zero, one, or many Python packages.)