docs: fix incorrect explanation

Author: kenjis

user_guide_src/source/tutorial/create_news_items.rst

@@ -84,7 +84,7 @@ validation <../libraries/validation>` library to do this.
 The code above adds a lot of functionality. First we load the NewsModel.
 After that, we check if we deal with the **POST** request and then
 the Controller-provided helper function is used to validate
-the $_POST fields. In this case, the title and text fields are required.
+the user input data. In this case, the POST data, and the title and text fields are required.
 
 CodeIgniter has a powerful validation library as demonstrated
 above. You can read :doc:`more about this library

user_guide_src/source/tutorial/static_pages.rst

@@ -256,7 +256,7 @@ arguments.
 More information about routing can be found in the URI Routing
 :doc:`documentation </incoming/routing>`.
 
-Here, the second rule in the ``$routes`` array matches **any** request
+Here, the second rule in the ``$routes`` object matches **any** request
 using the wildcard string ``(:any)``. and passes the parameter to the
 ``view()`` method of the ``Pages`` class.