docs: add notice (#40057)

components/transfer/index.en-US.md

@@ -16,6 +16,8 @@ Transfer the elements between two columns in an intuitive and efficient way.
 
 One or more elements can be selected from either column, one click on the proper `direction` button, and the transfer is done. The left column is considered the `source` and the right column is considered the `target`. As you can see in the API description, these names are reflected in.
 
+> notice: Transfer is a controlled component, uncontrolled mode is not supported.
+
 ## Examples
 
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components/transfer/index.zh-CN.md

@@ -17,6 +17,8 @@ cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*EAApQ5ephigAAAAAAA
 
 选择一个或以上的选项后，点击对应的方向键，可以把选中的选项移动到另一栏。其中，左边一栏为 `source`，右边一栏为 `target`，API 的设计也反映了这两个概念。
 
+> 注意：穿梭框组件只支持受控使用，不支持非受控模式。
+
 ## 代码演示
 
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