Adapted uses of versionchanged/versionadded to the new form.

Refs #20104.

docs/ref/forms/fields.txt

@@ -468,6 +468,7 @@ For each field, we describe the default widget used if you don't specify
     ``%(limit_value)s``, which will be substituted by the appropriate limit.
 
     .. versionchanged:: 1.6
+
         Similarly, the ``max_digits``, ``max_decimal_places`` and
         ``max_whole_digits`` error messages may contain ``%(max)s``.
 
@@ -1014,10 +1015,12 @@ objects (in the case of ``ModelMultipleChoiceField``) into the
       ``invalid_pk_value``
 
     .. versionchanged:: 1.5
+
         The empty and normalized values were changed to be consistently
         ``QuerySets`` instead of ``[]`` and ``QuerySet`` respectively.
 
     .. versionchanged:: 1.6
+
         The ``invalid_choice`` message may contain ``%(value)s`` and the
         ``invalid_pk_value`` message may contain ``%(pk)s``, which will be
         substituted by the appropriate values.

docs/ref/forms/models.txt

@@ -42,7 +42,7 @@ Model Form Functions
 
     .. versionchanged:: 1.6
 
-    The ``widgets`` and the ``validate_max`` parameters were added.
+        The ``widgets`` and the ``validate_max`` parameters were added.
 
 .. function:: inlineformset_factory(parent_model, model, form=ModelForm, formset=BaseInlineFormSet, fk_name=None, fields=None, exclude=None, extra=3, can_order=False, can_delete=True, max_num=None, formfield_callback=None, widgets=None, validate_max=False)
 
@@ -57,4 +57,4 @@ Model Form Functions
 
     .. versionchanged:: 1.6
 
-    The ``widgets`` and the ``validate_max`` parameters were added.
+        The ``widgets`` and the ``validate_max`` parameters were added.

docs/ref/forms/validation.txt

@@ -359,7 +359,7 @@ considering aren't valid, we must remember to remove them from the
 
 .. versionchanged:: 1.5
 
-Django used to remove the ``cleaned_data`` attribute entirely if there were
-any errors in the form. Since version 1.5, ``cleaned_data`` is present even if
-the form doesn't validate, but it contains only field values that did
-validate.
+    Django used to remove the ``cleaned_data`` attribute entirely if there were
+    any errors in the form. Since version 1.5, ``cleaned_data`` is present even if
+    the form doesn't validate, but it contains only field values that did
+    validate.

docs/ref/forms/widgets.txt

@@ -522,6 +522,7 @@ Selector and checkbox widgets
         ``True`` if the checkbox should be checked for that value.
 
         .. versionchanged:: 1.5
+
             Exceptions from ``check_test`` used to be silenced by its caller,
             this is no longer the case, they will propagate upwards.