docs: fix links

user_guide_src/source/concepts/security.rst

@@ -34,7 +34,7 @@ OWASP recommendations
 CodeIgniter provisions
 ----------------------
 
-- `HTTP library <../incoming/incomingrequest.html>`_ provides for input field filtering & content metadata
+- :doc:`HTTP library <../incoming/incomingrequest>` provides for input field filtering & content metadata
 - Form validation library
 
 *********************************************
@@ -56,7 +56,7 @@ OWASP recommendations
 CodeIgniter provisions
 ----------------------
 
-- `Session <../libraries/sessions.html>`_ library
+- :doc:`Session <../libraries/sessions>` library
 - :doc:`Security </libraries/security>` library provides for CSRF validation
 - Easy to add third party authentication
 
@@ -217,5 +217,5 @@ OWASP recommendations
 CodeIgniter provisions
 ----------------------
 
-- `HTTP library <../incoming/incomingrequest.html>`_ provides for ...
-- `Session <../libraries/sessions.html>`_ library provides flashdata
+- :doc:`HTTP library <../incoming/incomingrequest>` provides for ...
+- :doc:`Session <../libraries/sessions>` library provides flashdata

user_guide_src/source/concepts/structure.rst

@@ -84,4 +84,4 @@ Modifying Directory Locations
 If you've relocated any of the main directories, you can change the configuration
 settings inside **app/Config/Paths.php**.
 
-Please read `Managing your Applications <../general/managing_apps.html>`_
+Please read :doc:`Managing your Applications <../general/managing_apps>`.

user_guide_src/source/incoming/routing.rst

@@ -228,15 +228,15 @@ extensive set of routes that all share the opening string, like when building an
 
 This would prefix the 'users' and 'blog" URIs with "admin", handling URLs like ``/admin/users`` and ``/admin/blog``.
 
-If you need to assign options to a group, like a `namespace <#assigning-namespace>`_, do it before the callback::
+If you need to assign options to a group, like a :ref:`assigning-namespace`, do it before the callback::
 
     $routes->group('api', ['namespace' => 'App\API\v1'], function ($routes) {
         $routes->resource('users');
     });
 
 This would handle a resource route to the ``App\API\v1\Users`` controller with the ``/api/users`` URI.
 
-You can also use a specific `filter <filters.html>`_ for a group of routes. This will always
+You can also use a specific :doc:`filter <filters>` for a group of routes. This will always
 run the filter before or after the controller. This is especially handy during authentication or api logging::
 
     $routes->group('api', ['filter' => 'api-auth'], function ($routes) {
@@ -338,7 +338,7 @@ available from the command line::
 Global Options
 ==============
 
-All of the methods for creating a route (add, get, post, `resource <restful.html>`_ etc) can take an array of options that
+All of the methods for creating a route (add, get, post, :doc:`resource <restful>` etc) can take an array of options that
 can modify the generated routes, or further restrict them. The ``$options`` array is always the last parameter::
 
     $routes->add('from', 'to', $options);
@@ -363,7 +363,7 @@ The value for the filter can be a string or an array of strings:
 * matching the aliases defined in **app/Config/Filters.php**.
 * filter classnames
 
-See `Controller filters <filters.html>`_ for more information on setting up filters.
+See :doc:`Controller filters <filters>` for more information on setting up filters.
 
 .. Warning:: If you set filters to routes in **app/Config/Routes.php**
     (not in **app/Config/Filters.php**), it is recommended to disable auto-routing.
@@ -396,6 +396,8 @@ You specify an array for the filter value::
 
     $routes->add('admin',' AdminController::index', ['filter' => ['admin-auth', \App\Filters\SomeFilter::class]]);
 
+.. _assigning-namespace:
+
 Assigning Namespace
 -------------------
 

user_guide_src/source/installation/installing_manual.rst

@@ -10,7 +10,7 @@ will be your public-facing document root. Do not change anything inside the ``sy
 folder!
 
 .. note:: This is the installation technique closest to that described
-   for `CodeIgniter 3 <https://codeigniter.com/user_guide/installation/index.html>`_.
+   for `CodeIgniter 3 <https://codeigniter.com/userguide3/installation/index.html>`_.
 
 Installation
 ============

user_guide_src/source/installation/upgrade_415.rst

@@ -59,7 +59,7 @@ CURLRequest header change
 In the previous version, if you didn't provide your own headers, ``CURLRequest`` would send the request-headers from the browser.
 The bug was fixed. If your requests depend on the headers, your requests might fail after upgrading.
 In this case, add the necessary headers manually.
-See `CURLRequest Class <../libraries/curlrequest.html#headers>`_ for how to add.
+See :ref:`CURLRequest Class <curlrequest-request-options-headers>` for how to add.
 
 Query Builder changes
 ---------------------

user_guide_src/source/libraries/curlrequest.rst

@@ -299,6 +299,8 @@ if it's not already set::
         Use ``form_params`` for ``application/x-www-form-urlencoded`` request, and ``multipart`` for ``multipart/form-data``
         requests.
 
+.. _curlrequest-request-options-headers:
+
 headers
 =======
 

user_guide_src/source/testing/controllers.rst

@@ -4,7 +4,7 @@ Testing Controllers
 
 Testing your controllers is made convenient with a couple of new helper classes and traits. When testing controllers,
 you can execute the code within a controller, without first running through the entire application bootstrap process.
-Often times, using the `Feature Testing tools <feature.html>`_ will be simpler, but this functionality is here in
+Often times, using the :doc:`Feature Testing tools <feature>` will be simpler, but this functionality is here in
 case you need it.
 
 .. note:: Because the entire framework has not been bootstrapped, there will be times when you cannot test a controller
@@ -161,7 +161,7 @@ you need to set a JSON value as the body. The only parameter is a string that re
 Checking the Response
 =====================
 
-``ControllerTestTrait::execute()`` returns an instance of a ``TestResponse``. See `Testing Responses <response.html>`_ on
+``ControllerTestTrait::execute()`` returns an instance of a ``TestResponse``. See :doc:`Testing Responses <response>` on
 how to use this class to perform additional assertions and verification in your test cases.
 
 Filter Testing

user_guide_src/source/testing/feature.rst

@@ -157,5 +157,5 @@ the Content-Type header for you so if you need that, you can set it with the ``w
 Checking the Response
 =====================
 
-``FeatureTestTrait::call()`` returns an instance of a ``TestResponse``. See `Testing Responses <response.html>`_ on
+``FeatureTestTrait::call()`` returns an instance of a ``TestResponse``. See :doc:`Testing Responses <response>` on
 how to use this class to perform additional assertions and verification in your test cases.

user_guide_src/source/testing/overview.rst

@@ -103,7 +103,7 @@ have the correct namespace relative to ``App``.
 
 .. note:: Namespaces are not strictly required for test classes, but they are helpful to ensure no class names collide.
 
-When testing database results, you must use the `DatabaseTestTrait <database.html>`_ in your class.
+When testing database results, you must use the :doc:`DatabaseTestTrait <database>` in your class.
 
 Staging
 -------
@@ -216,7 +216,7 @@ Ensure that a header or cookie was actually emitted::
     $this->assertHeaderEmitted("Set-Cookie: foo=bar");
 
 Note: the test case with this should be `run as a separate process
-in PHPunit <https://phpunit.readthedocs.io/en/7.4/annotations.html#runinseparateprocess>`_.
+in PHPunit <https://phpunit.readthedocs.io/en/9.5/annotations.html#runinseparateprocess>`_.
 
 **assertHeaderNotEmitted($header, $ignoreCase = false)**
 
@@ -231,7 +231,7 @@ Ensure that a header or cookie was not emitted::
     $this->assertHeaderNotEmitted("Set-Cookie: banana");
 
 Note: the test case with this should be `run as a separate process
-in PHPunit <https://phpunit.readthedocs.io/en/7.4/annotations.html#runinseparateprocess>`_.
+in PHPunit <https://phpunit.readthedocs.io/en/9.5/annotations.html#runinseparateprocess>`_.
 
 **assertCloseEnough($expected, $actual, $message = '', $tolerance = 1)**
 

user_guide_src/source/testing/response.rst

@@ -4,12 +4,16 @@ Testing Responses
 
 The ``TestResponse`` class provides a number of helpful functions for parsing and testing responses
 from your test cases. Usually a ``TestResponse`` will be provided for you as a result of your
-`Controller Tests <controllers.html>`_ or `HTTP Feature Tests <feature.html>`_, but you can always
+:doc:`Controller Tests <controllers>` or :doc:`HTTP Feature Tests <feature>`, but you can always
 create your own directly using any ``ResponseInterface``::
 
     $result = new \CodeIgniter\Test\TestResponse($response);
     $result->assertOK();
 
+.. contents::
+    :local:
+    :depth: 2
+
 Testing the Response
 ====================