docs: replace here in the href with the page title

Author: kenjis

user_guide_src/source/installation/upgrade_models.rst

@@ -32,7 +32,7 @@ Example: You have a version 3 model located in **application/models/users/user_c
 The new Model in CI4 has a lot of built-in methods. For example, the ``find($id)`` method. With this you can find data where the primary key is equal to ``$id``.
 Inserting data is also easier than before. In CI4 there is an ``insert($data)`` method. You can optionally make use of all those built-in methods and migrate your code to the new methods.
 
-You can find more information to those methods :doc:`here </models/model>`.
+You can find more information to those methods in :doc:`../models/model`.
 
 Code Example
 ============