fix：修复编辑按钮跳转失败问题

src/router/index.ts

@@ -474,6 +474,12 @@ const routes: RouteRecordRaw[] = [
             component: AddExam,
             meta: { title: '添加试卷' }
           },
+          {
+            path: 'edit/:id',
+            name: 'EditExam',
+            component: AddExam,
+            meta: { title: '编辑试卷' }
+          },
           {
             path: 'preview',
             name: 'ExamPreview',