fix: 合奏上低音号指法

src/subpages/colexiu/fingering/format-id.ts

@@ -12,6 +12,7 @@ export const formatdata: ObjectType = {
   TenorSaxophone: 6,
   Saxophone: 6,
   UpBassHorn: 15,
+  Euphonium: 15,
   Melodica: 137,
   HulusiFlute: 136,
   PanFlute: 135,