Fix incorrect interface names in xml.sax.rst

Author: manoj-marimuthu

Doc/library/xml.sax.rst

@@ -79,10 +79,10 @@ instantiated by the application itself.  Since Python does not have an explicit
 notion of interface, they are formally introduced as classes, but applications
 may use implementations which do not inherit from the provided classes.  The
 :class:`~xml.sax.xmlreader.InputSource`, :class:`~xml.sax.xmlreader.Locator`,
-:class:`~xml.sax.xmlreader.Attributes`, :class:`~xml.sax.xmlreader.AttributesNS`,
-and :class:`~xml.sax.xmlreader.XMLReader` interfaces are defined in the
-module :mod:`xml.sax.xmlreader`.  The handler interfaces are defined in
-:mod:`xml.sax.handler`.  For convenience,
+:class:`~xml.sax.xmlreader.AttributesImpl`,
+:class:`~xml.sax.xmlreader.AttributesNSImpl`, and :class:`~xml.sax.xmlreader.XMLReader`
+interfaces are defined in the module :mod:`xml.sax.xmlreader`.
+The handler interfaces are defined in :mod:`xml.sax.handler`.  For convenience,
 :class:`~xml.sax.xmlreader.InputSource` (which is often
 instantiated directly) and the handler classes are also available from
 :mod:`!xml.sax`.  These interfaces are described below.