fix新增过滤纯音乐

src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java

@@ -156,7 +156,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
             return compare.compare(o1.getTitle(), o2.getTitle());
         });
         if (filter) {
-            list.removeIf(data -> data.getTitle().contains("instrumental"));
+            list.removeIf(data -> data.getTitle().toLowerCase().contains("instrumental"));
         }
         return list;
     }