Removed unnecessary code-block directives.

docs/topics/db/aggregation.txt

@@ -12,7 +12,7 @@ collection of objects. This topic guide describes the ways that aggregate values
 can be generated and returned using Django queries.
 
 Throughout this guide, we'll refer to the following models. These models are
-used to track the inventory for a series of online bookstores:
+used to track the inventory for a series of online bookstores::
 
 .. _queryset-model-example:
 

docs/topics/db/examples/many_to_one.txt

@@ -2,11 +2,7 @@
 Many-to-one relationships
 #########################
 
-.. highlight:: pycon
-
-To define a many-to-one relationship, use :class:`~django.db.models.ForeignKey`.
-
-.. code-block:: python
+To define a many-to-one relationship, use :class:`~django.db.models.ForeignKey`::
 
     from django.db import models
 
@@ -32,6 +28,8 @@ To define a many-to-one relationship, use :class:`~django.db.models.ForeignKey`.
 What follows are examples of operations that can be performed using the Python
 API facilities.
 
+.. highlight:: pycon
+
 Create a few Reporters::
 
     >>> r = Reporter(first_name='John', last_name='Smith', email='john@example.com')

docs/topics/db/examples/one_to_one.txt

@@ -2,13 +2,9 @@
 One-to-one relationships
 ########################
 
-.. highlight:: pycon
-
 To define a one-to-one relationship, use :ref:`ref-onetoone`.
 
-In this example, a ``Place`` optionally can be a ``Restaurant``:
-
-.. code-block:: python
+In this example, a ``Place`` optionally can be a ``Restaurant``::
 
     from django.db import models
 
@@ -37,6 +33,8 @@ In this example, a ``Place`` optionally can be a ``Restaurant``:
 What follows are examples of operations that can be performed using the Python
 API facilities.
 
+.. highlight:: pycon
+
 Create a couple of Places::
 
     >>> p1 = Place(name='Demon Dogs', address='944 W. Fullerton')

docs/topics/db/multi-db.txt

@@ -24,9 +24,7 @@ the alias of ``default`` when no other database has been selected.
 
 The following is an example ``settings.py`` snippet defining two
 databases -- a default PostgreSQL database and a MySQL database called
-``users``:
-
-.. code-block:: python
+``users``::
 
     DATABASES = {
         'default': {

docs/topics/db/sql.txt

@@ -324,16 +324,12 @@ manager.
 
 .. _`Python ticket #9220`: http://bugs.python.org/issue9220
 
-Using a cursor as a context manager:
-
-.. code-block:: python
+Using a cursor as a context manager::
 
     with connection.cursor() as c:
         c.execute(...)
 
-is equivalent to:
-
-.. code-block:: python
+is equivalent to::
 
     c = connection.cursor()
     try: