Hopefully the last one
@@ -215,7 +215,7 @@ H1 MUST verify the request from H3 to ensure the ``signed`` property is correct
as well as the ``key_validity_url`` as still being valid. This is done by making
a request to the `identity server /isvalid`_ endpoint, using the provided URL
rather than constructing a new one. The query string and response for the provided
-URL must match the identity service specification.
+URL must match the Identity Service Specification.
The reason that no other homeserver may reject the event based on checking
``key_validity_url`` is that we must ensure event acceptance is deterministic.
