Code review comment for lp:~phill-ridout/openlp/DreamBeam

The docstring should rather look like this:

    An example of DreamBeam xml mark-up::

        <?xml version="1.0"?>
        <DreamSong xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:xsd="http://www.w3.org/2001/XMLSchema">
          <WordWrap>false</WordWrap>
          <Version>0.80</Version>
          <Title>Amazing Grace</Title>
          <Author>John Newton</Author>
          <Collection />
          <Number />
          <Notes />
          <KeyRangeLow>F</KeyRangeLow>
          <KeyRangeHigh>G</KeyRangeHigh>
          <MinorKey>false</MinorKey>
          <DualLanguage>false</DualLanguage>
          <SongLyrics>
            <LyricsItem Type="Verse" Number="1">Amazing Grace, how sweet the sound,
            That saved a wretch like me.
            I once was lost but now am found,
            Was blind, but now, I see.</LyricsItem>
            <LyricsItem Type="Verse" Number="2">T’was Grace that taught my heart to fear.
        And Grace, my fears relieved.
        How precious did that Grace appear…
        the hour I first believed.</LyricsItem>
          </SongLyrics>
          <Sequence>
            <LyricsSequenceItem Type="Verse" Number="1" />
            <LyricsSequenceItem Type="Verse" Number="2" />
          </Sequence>
          <ShowRectangles>false</ShowRectangles>
        </DreamSong>

    Valid extensions for a DreamBeam song file are:

        * \*.xml

My version: http://rst.ninjs.org/?n=8cccf5fe3208cfcc6825032d63484a78&theme=basic
Your version: http://rst.ninjs.org/?n=992060bbf63648d8cda3ae1b7e3b07cc&theme=basic