docs: multi-site: Decrease header levels
This way, there are no competing page titles but only one,
and thus no separate entries for sub-headings in the sidebar.
@@ -8,7 +8,7 @@ Multiple Sites & Sub-URI
.. _configure-multiple-sites:
Multiple Sites
-==============
+--------------
Isso is designed to serve comments for a single website and therefore stores
comments for a relative URL. This is done to support HTTP, HTTPS and even domain transfers
@@ -74,7 +74,7 @@ URLs on both sites as it will most likely cause CORS-related errors.
.. _configure-sub-uri:
Sub-URI
-=======
+-------
You can run Isso on the same domain as your website, which circumvents issues
originating from CORS_. Also, privacy-protecting browser addons such as
