Remove trailing whitespace.
diff --git a/Doc/distutils/packageindex.rst b/Doc/distutils/packageindex.rst
index ef81d64..3715c82 100644
--- a/Doc/distutils/packageindex.rst
+++ b/Doc/distutils/packageindex.rst
@@ -72,7 +72,7 @@
    index-servers =
      pypi
      other
- 
+
    [pypi]
    repository: <repository-url>
    username: <username>
@@ -91,4 +91,4 @@
 
    python setup.py register -r other
 
- 
+