fix: 修复云对象数字错误码示例错误

pages/API/unicloud-import-object/unicloud-import-object.uvue

@@ -108,11 +108,11 @@
           }
         })
       },
-      async failWithNumberErrCode(){
+      async failWithNumberErrCode() : Promise<void> {
         const todo = uniCloud.importObject('todo', {
           customUI: this.isUniTest
         })
-        await todo.fail().then((res : UTSJSONObject) => {
+        await todo.failWithNumberErrCode().then((res : UTSJSONObject) => {
           this.notify('todo.fail应调用失败，此处错误的触发了成功回调', '错误')
           console.log('todo.fail: ', res);
         }).catch((err : any | null) => {