[1.4.x] Fixed #19812 - Removed a duplicate phrase in the widget docs.

        * A single value (e.g., a string) that is the "compressed" representation

          of a ``list`` of values.

        If `value` is a list, output of :meth:`~MultiWidget.render` will be a

        concatenation of rendered child widgets. If `value` is not a list, it

        will be first processed by the method :meth:`~MultiWidget.decompress()`

        to create the list and then processed as above.

        In the second case -- i.e., if the value is *not* a list --

        ``render()`` will first decompress the value into a ``list`` before

        rendering it. It does so by calling the ``decompress()`` method, which

        :class:`MultiWidget`'s subclasses must implement (see above).

        If ``value`` is a list, the output of :meth:`~MultiWidget.render` will

        be a concatenation of rendered child widgets. If ``value`` is not a

        list, it will first be processed by the method

        :meth:`~MultiWidget.decompress()` to create the list and then rendered.

        When ``render()`` executes its HTML rendering, each value in the list

        is rendered with the corresponding widget -- the first value is