Merge branch 'dev' of http://git.dayaedu.com/huangqiyong/classroom into staging

src/libs/instruments.ts

@@ -63,7 +63,7 @@ const instruments: any = {
    "Soprano Saxophone": "高音萨克斯管",
    "Alto Saxophone": "中音萨克斯管",
    "Tenor Saxophone": "次中音萨克斯管",
-   "Baritone Saxophone": "上低音萨克斯管",
+   "Baritone Saxophone": "低音萨克斯管",
    Piccolo: "短笛",
    Flute: "长笛",
    Recorder: "竖笛",