[latexrefman] Change legend for list picture

[Hefferon, James S.]

Karl asked about this.  It is better this way so I changed it.

I couldn't get @math{} to work; it changed the text to italics.  So there is at present no @math there

(Karl you also asked about describing the vertical spacing in the trivlist example, but that proves to be more than just a couple of words.)

Jim

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... and if I did fall,
  I would fly.  -- Philippe Petit