Corrected URL

Author: radarhere

index.html

@@ -71,7 +71,7 @@ <h3><a href=
       "https://github.com/python-pillow/Pillow">hosted on
       GitHub</a>, tested on
       <a href="https://travis-ci.org/python-pillow/Pillow">Travis CI</a>,
-      <a href="https://ci.appveyor.com/project/Pythonpillow/pillow">AppVeyor</a>,
+      <a href="https://ci.appveyor.com/project/python-pillow/Pillow">AppVeyor</a>,
       <a href="https://coveralls.io/github/python-pillow/Pillow">Coveralls</a>,
       <a href="https://landscape.io/github/python-pillow/Pillow">Landscape</a>
       and <a href="https://pypi.python.org/pypi/Pillow">released on