Use HTTPS for a number of URLs in the docs
diff --git a/docs/community.rst b/docs/community.rst
index bf1cd1c..2b7cdc6 100644
--- a/docs/community.rst
+++ b/docs/community.rst
@@ -17,4 +17,4 @@
.. _`Source code`: https://github.com/pyca/cryptography
.. _`Issue tracker`: https://github.com/pyca/cryptography/issues
.. _`Documentation`: https://cryptography.io/
-.. _`Python Community Code of Conduct`: http://www.python.org/psf/codeofconduct/
+.. _`Python Community Code of Conduct`: https://www.python.org/psf/codeofconduct/