盲票创建boxNo截取错误修复

mp-service/src/main/java/com/qs/mp/admin/service/impl/TicketBoxSerialServiceImpl.java

@@ -59,7 +59,7 @@ public class TicketBoxSerialServiceImpl implements ITicketBoxSerialService {
         int year = Character.codePointAt(boxNo.substring(2, 3), 0) - 50;
         // 同一年份，做累加
         if (year == Integer.valueOf(prefix)) {
-          start = Integer.valueOf(boxNo.substring(2)) + 1;
+          start = Integer.valueOf(boxNo.substring(3)) + 1;
         }
       }
       redisTemplate.opsForValue().set(prefix, start);