Fixed #26124 -- Added missing code formatting to docs headers.

docs/topics/testing/advanced.txt

@@ -534,8 +534,8 @@ Methods
 Testing utilities
 -----------------
 
-django.test.utils
-~~~~~~~~~~~~~~~~~
+``django.test.utils``
+~~~~~~~~~~~~~~~~~~~~~
 
 .. module:: django.test.utils
    :synopsis: Helpers to write custom test runners.
@@ -555,8 +555,8 @@ utility methods in the ``django.test.utils`` module.
     magic hooks into the template system and restoring normal email
     services.
 
-django.db.connection.creation
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+``django.db.connection.creation``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. currentmodule:: django.db.connection.creation
 
@@ -615,8 +615,8 @@ can be useful during testing.
 
 .. _topics-testing-code-coverage:
 
-Integration with coverage.py
-============================
+Integration with ``coverage.py``
+================================
 
 Code coverage describes how much source code has been tested. It shows which
 parts of your code are being exercised by tests and which are not. It's an

docs/topics/testing/tools.txt

@@ -617,8 +617,8 @@ Normal Python unit test classes extend a base class of
 
    Hierarchy of Django unit testing classes
 
-SimpleTestCase
---------------
+``SimpleTestCase``
+------------------
 
 .. class:: SimpleTestCase()
 
@@ -701,8 +701,8 @@ then you should use :class:`~django.test.TransactionTestCase` or
     :exc:`unittest.SkipTest` in ``setUpClass()``, be sure to do it before
     calling ``super()`` to avoid this.
 
-TransactionTestCase
--------------------
+``TransactionTestCase``
+-----------------------
 
 .. class:: TransactionTestCase()
 
@@ -742,8 +742,8 @@ to test the effects of commit and rollback:
 
 ``TransactionTestCase`` inherits from :class:`~django.test.SimpleTestCase`.
 
-TestCase
---------
+``TestCase``
+------------
 
 .. class:: TestCase()
 
@@ -811,8 +811,8 @@ additions, including:
 
 .. _live-test-server:
 
-LiveServerTestCase
-------------------
+``LiveServerTestCase``
+----------------------
 
 .. class:: LiveServerTestCase()