adjustion some mentions of message factory to HTTP factory

Author: dbu

clients/includes/further-reading.inc

@@ -1,5 +1,5 @@
 * Use :doc:`plugins </plugins/introduction>` to customize the way HTTP requests are sent and
   responses processed by following redirects, adding Authentication or Cookie
   headers and more.
-* Learn how you can decouple your code from any PSR-7 implementation by using a
-  :ref:`message factory <message-factory>`.
+* Learn how you can decouple your code from any PSR-7 implementation by using
+  the :ref:`HTTP factories <message-factory>`.

httplug/library-developers.rst

@@ -63,7 +63,7 @@ Messages
 --------
 
 When you construct HTTP message objects in your library, you should not depend on a concrete PSR-7 message
-implementation. Instead, use the :ref:`PHP-HTTP message factory <message-factory>`.
+implementation. Instead, use the :doc:`HTTP factories <../message/message-factory>`.
 
 Discovery
 ---------

message.rst

@@ -12,4 +12,5 @@ This package contains various PSR-7 tools which might be useful in an HTTP workf
 * Various Stream encoding tools
 * Message decorators
 * Message factory implementations for Guzzle PSR-7, Diactoros and Slim Framework.
+* Stream and URI factory implementations for Guzzle PSR-7 and Diactoros
 * Cookie implementation