(Not) mentioning that URW fonts are distributetd with LilyPond

[Matthias Kilian]

Hi,

https://lilypond.org/doc/v2.25/Documentation/notation/font-families

still claims that LilyPond still includes URW fonts, which it doesn't
since 2.24.

I'm not sure wether it's ok to just remove the 'distributed with
LilyPond' in the corresponding paragraph or wether this would let people
wonder why the URW fonts are mentioned at all. That paragraph is still
useful, so completely removing it would probably not the best option.

Any thoughts or suggestions?

Ciao,
        Kili