Merge pull request #498 from alex/redirect
Capital S is the canonical URL
diff --git a/docs/contributing.rst b/docs/contributing.rst
index 4bb1461..3de41fd 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -287,5 +287,5 @@
.. _`tox`: https://pypi.python.org/pypi/tox
.. _`virtualenv`: https://pypi.python.org/pypi/virtualenv
.. _`pip`: https://pypi.python.org/pypi/pip
-.. _`sphinx`: https://pypi.python.org/pypi/sphinx
+.. _`sphinx`: https://pypi.python.org/pypi/Sphinx
.. _`reStructured Text`: http://sphinx-doc.org/rest.html