Fix pageDTO

src/main/java/com/backendsys/entity/PageDTO.java

@@ -8,7 +8,7 @@ public class PageDTO {
     @Min(value = 1, message = "pageNum不能小于{value}")
     //private Integer pageNum = 1;
     private Integer page_num;
-    @Min(value = 1, message = "pageNum不能小于{value}")
+    @Min(value = 1, message = "pageSize不能小于{value}")
     //private Integer pageSize = 10;
     private Integer page_size;
 }