Fix other class reference headings to match

Author: jim-parry

user_guide_src/source/incoming/incomingrequest.rst

@@ -270,8 +270,9 @@ You can easily negotiate content types with the request through the ``negotiate(
 
 See the :doc:`Content Negotiation </incoming/content_negotiation>` page for more details.
 
+***************
 Class Reference
----------------
+***************
 
 .. note:: In addition to the methods listed here, this class inherits the methods from the
 	:doc:`Request Class </incoming/request>` and the :doc:`Message Class </incoming/message>`.

user_guide_src/source/incoming/request.rst

@@ -11,9 +11,9 @@ from the Request class to add specific functionality.
 See the documentation for the :doc:`IncomingRequest Class </incoming/incomingrequest>` and
 :doc:`CURLRequest Class </libraries/curlrequest>` for more usage details.
 
-===============
+***************
 Class Reference
-===============
+***************
 
 .. php:class:: CodeIgniter\\HTTP\\Request
 

user_guide_src/source/libraries/caching.rst

@@ -71,9 +71,9 @@ This is an array of servers that will be used when using the ``Memcache(d)`` han
 
 The settings for the Redis server that you wish to use when using the ``Redis`` handler.
 
-===============
+***************
 Class Reference
-===============
+***************
 
 .. php:method:: isSupported()
 

user_guide_src/source/outgoing/view_renderer.rst

@@ -99,8 +99,9 @@ Several options can be passed to the ``render()`` or ``renderString()`` methods:
 		ignored for renderString()
 -   ``saveData`` - true if the view data parameters should be retained for subsequent calls
 
+***************
 Class Reference
-===============
+***************
 
 .. php:class:: CodeIgniter\\View\\View