Merge pull request #5698 from kenjis/fix-docs-autoloader.rst

docs: fix out of dated description in autoloader.rst

Author: kenjis

user_guide_src/source/concepts/autoloader.rst

@@ -10,10 +10,9 @@ hard-coding that location into your files in a series of ``requires()`` is a mas
 headache and very error-prone. That's where autoloaders come in.
 
 CodeIgniter provides a very flexible autoloader that can be used with very little configuration.
-It can locate individual non-namespaced classes, namespaced classes that adhere to
+It can locate individual namespaced classes that adhere to
 `PSR-4 <https://www.php-fig.org/psr/psr-4/>`_ autoloading
-directory structures, and will even attempt to locate classes in common directories (like Controllers,
-Models, etc).
+directory structures.
 
 For performance improvement, the core CodeIgniter components have been added to the classmap.