old \alternative-syntax in documentation

[Rudi Radler]

Thanks for that great tool! small bug found - see below Regards from
Radler
https://lilypond.org/doc/v2.25/Documentation/notation/normal-repeats
\relative{
c''1
\repeatvolta2{c4def~}
*\alternative{ {f2d} {f2\repeatTief,} }*
} By the way: The new syntax is shown at this web-side as well:
\relativec''{
\time3/4
c4cc
\setScore.voltaSpannerDuration=\musicLength2.
\repeatvolta5{
d4dd
\alternative{
*\volta1,2,3,4{*
e4ee
f4ff}
\volta5{
g4gg}}}
}