Change titles to links on contrib index

docs/reference/contrib/index.rst

@@ -14,41 +14,31 @@ Wagtail ships with a variety of extra optional modules.
     api/index
 
 
-``wagtailmedusa``
------------------
-
 :doc:`staticsitegen`
+--------------------
 
 Provides a management command that turns a Wagtail site into a set of static HTML files.
 
 
-``wagtailsitemaps``
--------------------
-
 :doc:`sitemaps`
+---------------
 
 Provides a view that generates a Google XML sitemap of your public wagtail content.
 
 
-``wagtailfrontendcache``
-------------------------
-
 :doc:`frontendcache`
+--------------------
 
 A module for automatically purging pages from a cache (Varnish, Squid or Cloudflare) when their content is changed.
 
 
-``wagtailroutablepage``
------------------------
-
 :doc:`routablepage`
+-------------------
 
 Provides a way of embedding Django URLconfs into pages.
 
 
-``wagtailapi``
---------------
-
 :doc:`api/index`
+----------------
 
 A module for adding a read only, JSON based web API to your Wagtail site