first instance of lyrics in LM could look better

[Mark Polesky]

The lyrics in the "twinkle" example are left-aligned instead
of centered because the example uses \lyricmode instead of
\addlyrics. This is the first example using lyrics in the 
Learning Manual, and I think it should look better than this.

http://lilypond.org/doc/v2.11/Documentation/user/lilypond-learning/Background#Example-applications

So, in the file /Documentation/user/introduction.itely, 

lines 716-722 currently read:

@lilypond[quote,ragged-right]
<<
   \chords { c2 c f2 c }
   \new Staff \relative c' { \time 2/4 c4 c g'4 g a4 a g2 }
   \new Lyrics \lyricmode { twin4 kle twin kle lit tle star2 }
>>
@end lilypond

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I propose that these lines be changed to:

@lilypond[quote,ragged-right]
<<
   \chords { c2 c f2 c }
   \new Staff \relative c' { \time 2/4 c4 c g'4 g a4 a g2 }
   \addlyrics { twin -- kle twin -- kle lit -- tle star }
>>
@end lilypond

______________________________________________________________

- Mark