[Doc] props title

packages/switch-cell/en-US.md

@@ -50,7 +50,7 @@ use `loading` property to keep component in loading state
 </van-cell-group>
 ```
 
-### API
+### Props
 
 | Attribute | Description | Type | Default |
 |------|------|------|------|
@@ -66,7 +66,7 @@ use `loading` property to keep component in loading state
 | active-value | Value when active | `any` | `true` |
 | inactive-value | Value when inactive | `any` | `false` |
 
-### Event
+### Events
 
 | Event | Description | Arguments |
 |------|------|------|

packages/switch-cell/zh-CN.md

@@ -49,7 +49,7 @@ export default {
 </van-cell-group>
 ```
 
-### API
+### Props
 
 | 参数 | 说明 | 类型 | 默认值 | 版本 |
 |------|------|------|------|------|
@@ -65,7 +65,7 @@ export default {
 | active-value | 打开时的值 | `any` | `true` | 1.5.6 |
 | inactive-value | 关闭时的值 | `any` | `false` | 1.5.6 |
 
-### Event
+### Events
 
 | 事件名 | 说明 | 回调参数 |
 |------|------|------|