Apply suggestions from code review

Co-Authored-By: Oskar Stark <oskarstark@googlemail.com>

Author: lyrixx

logging/handlers.rst

@@ -1,8 +1,8 @@
 Handlers
 ========
 
-``ElasticsearchLogstashHandler``
---------------------------------
+ElasticsearchLogstashHandler
+----------------------------
 
 .. versionadded:: 4.4
 
@@ -16,10 +16,9 @@ In a development environment, it's fine to keep the default configuration: for
 each log, an HTTP request will be made to push the log to Elasticsearch.
 
 In a production environment, it's highly recommended to wrap this handler in a
-handler with buffering capabilities (like the FingersCrossedHandler, or
-BufferHandler) in order to call Elasticsearch only once with a bulk push. For
-even better performance and fault tolerance, a proper ELK
-(https://www.elastic.co/what-is/elk-stack) stack is recommended.
+handler with buffering capabilities (like the ``FingersCrossedHandler`` or
+``BufferHandler``) in order to call Elasticsearch only once with a bulk push. For
+even better performance and fault tolerance, a proper `ELK stack`_ is recommended.
 
 To use it, declare it as a service:
 
@@ -103,3 +102,5 @@ then reference it in monolog configuration:
                 ],
             ],
         ]);
+
+.. _`ELK stack`: https://www.elastic.co/what-is/elk-stack