Removed trailing whitespace in docs.

docs/ref/contrib/auth.txt

@@ -679,7 +679,7 @@ The following backends are available in :mod:`django.contrib.auth.backends`:
         user permissions and group permissions. Returns an empty set if
         :attr:`~django.contrib.auth.models.AbstractBaseUser.is_anonymous` or
         :attr:`~django.contrib.auth.models.CustomUser.is_active` is ``False``.
-    
+
         .. versionchanged:: 5.2
 
             ``aget_all_permissions()`` function was added.

docs/ref/forms/api.txt

@@ -1416,7 +1416,7 @@ Methods of ``BoundField``
 
 .. method:: BoundField.render(template_name=None, context=None, renderer=None)
 
-    The render method is called by ``as_field_group``. All arguments are 
+    The render method is called by ``as_field_group``. All arguments are
     optional and default to:
 
     * ``template_name``: :attr:`.BoundField.template_name`

docs/ref/forms/fields.txt

@@ -392,7 +392,7 @@ be ignored in favor of the value from the form's initial data.
 .. attribute:: Field.template_name
 
 The ``template_name`` argument allows a custom template to be used when the
-field is rendered with :meth:`~django.forms.BoundField.as_field_group`. By 
+field is rendered with :meth:`~django.forms.BoundField.as_field_group`. By
 default this value is set to ``"django/forms/field.html"``. Can be changed per
 field by overriding this attribute or more generally by overriding the default
 template, see also :ref:`overriding-built-in-field-templates`.