Small doc style fixes

Author: Ryan P Kilby

docs/ref/fields.txt

@@ -11,7 +11,9 @@ Defines a class level attribute ``ISO_8601`` as constant for the format.
 
 Sets ``input_formats = [ISO_8601]`` — this means that by default ``IsoDateTimeField`` will **only** parse ISO 8601 formated dates.
 
-You may set ``input_formats`` to your list of required formats as per the `DateTimeField Docs`_, using the ``ISO_8601`` class level attribute to specify the  ISO 8601 format. ::
+You may set ``input_formats`` to your list of required formats as per the `DateTimeField Docs`_, using the ``ISO_8601`` class level attribute to specify the  ISO 8601 format.
+
+.. code-block:: python
 
     f = IsoDateTimeField()
     f.input_formats = [IsoDateTimeField.ISO_8601] + DateTimeField.input_formats

docs/ref/settings.txt

@@ -92,6 +92,6 @@ For example, you could add verbose output for "exact" lookups.
 FILTERS_STRICTNESS
 ------------------
 
-DEFAULT: ``STRICTNESS.RETURN_NO_RESULTS``
+Default: ``STRICTNESS.RETURN_NO_RESULTS``
 
 Set the global default for FilterSet :ref:`strictness <strict>`.

docs/ref/widgets.txt

@@ -30,7 +30,9 @@ placeholders:
 
 This widget converts its input into Python's True/False values. It will convert
 all case variations of ``True`` and ``False`` into the internal Python values.
-To use it, pass this into the ``widgets`` argument of the ``BooleanFilter``::
+To use it, pass this into the ``widgets`` argument of the ``BooleanFilter``:
+
+.. code-block:: python
 
   active = BooleanFilter(widget=BooleanWidget())
 
@@ -54,6 +56,8 @@ This widget is used with ``RangeFilter`` and its subclasses. It generates two
 form input elements which generally act as start/end values in a range.
 Under the hood, it is django's ``forms.TextInput`` widget and excepts
 the same arguments and values. To use it, pass it to ``widget`` argument of
-a ``RangeField``::
+a ``RangeField``:
+
+.. code-block:: python
 
   date_range = DateFromToRangeFilter(widget=RangeWidget(attrs={'placeholder': 'YYYY/MM/DD'}))