docs(action-sheet): fix method do not match

document/components/docs/en-US/action-sheet.md

@@ -9,7 +9,7 @@ __Notice:__ Cause this component used create-api, so you should read [create-api
 - Basic usage
 
   ```html
-  <cube-button @click="showActionSheet">action sheet</cube-button>
+  <cube-button @click="showDefault">action sheet</cube-button>
   ```
   ```js
   export default {

document/components/docs/zh-CN/action-sheet.md

@@ -9,7 +9,7 @@ __注：__ 由于此组件基于 create-api 实现，所以在使用之前，请
 - 基本用法
 
   ```html
-  <cube-button @click="showActionSheet">操作列表</cube-button>
+  <cube-button @click="showDefault">操作列表</cube-button>
   ```
   ```js
   export default {