fix 试卷题目

zhongzheng-system/src/main/java/com/zhongzheng/modules/bank/bo/QuestionOptionsAddBo.java

@@ -17,5 +17,5 @@ public class QuestionOptionsAddBo {
     private String content;
 
     @ApiModelProperty("图片地址")
-    private Long imgUrl;
+    private String imgUrl;
 }