更新文案

stmms-web/src/main/java/cn/com/qmth/stmms/admin/exam/LibraryController.java

@@ -490,7 +490,7 @@ public class LibraryController extends BaseExamController {
 				libraryService.assigned(library.getId(),mk.getId());
 				obj.put("success", true);
 			}else {
-				obj.put("message", "指定失败，请重试");
+				obj.put("message", "指定失败，请更换评卷员重试");
 				return obj;
 			}
 			return obj;