Fix typo in docs for RangeWidget.

Author: foobarna

docs/ref/widgets.txt

@@ -54,7 +54,7 @@ well as type conversion.
 
 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
+Under the hood, it is Django's ``forms.TextInput`` widget and accepts
 the same arguments and values. To use it, pass it to ``widget`` argument of
 a ``RangeField``: