docs: fix duplicate object description of ...

Author: kenjis

user_guide_src/source/incoming/incomingrequest.rst

@@ -250,7 +250,7 @@ The methods provided by the parent classes that are available are:
 * :meth:`CodeIgniter\\HTTP\\Message::getProtocolVersion`
 * :meth:`CodeIgniter\\HTTP\\Message::setProtocolVersion`
 
-.. php:class:: CodeIgniter\\HTTP\\IncomingRequest
+.. php:class:: IncomingRequest
 
     .. php:method:: isCLI()
 

user_guide_src/source/libraries/cookies.rst

@@ -223,7 +223,7 @@ In runtime, you can manually supply a new default using the ``Cookie::setDefault
 Class Reference
 ***************
 
-.. php:class:: CodeIgniter\\HTTP\\Cookie\\Cookie
+.. php:class:: Cookie
 
     .. php:staticmethod:: setDefaults([$config = []])
 

user_guide_src/source/libraries/email.rst

@@ -158,7 +158,7 @@ Place the item you do not want word-wrapped between: {unwrap} {/unwrap}
 Class Reference
 ***************
 
-.. php:class:: CodeIgniter\\Email\\Email
+.. php:class:: Email
 
     .. php:method:: setFrom($from[, $name = ''[, $returnPath = null]])