Make this a heading
diff --git a/docs/index.rst b/docs/index.rst
index a061b3e..9985157 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -21,7 +21,8 @@
 * Lack of high level, "Cryptography for humans", APIs
 
 
-Contents:
+Contents
+--------
 
 .. toctree::
     :maxdepth: 2