doc: update message duration description

components/message/index.en-US.md

@@ -26,7 +26,7 @@ This components provides some static methods, with usage and arguments as follow
 | Argument | Description | Type | Default |
 | -------- | ----------- | ---- | ------- |
 | content | content of the message | string\|ReactNode | - |
-| duration | time before auto-dismiss, in seconds | number | 1.5 |
+| duration | time(seconds) before auto-dismiss, don't dismiss if set to 0 | number | 1.5 |
 | onClose | Specify a function that will be called when the message is closed | Function | - |
 
 Methods for global configuration and destruction are also provided:

components/message/index.zh-CN.md

@@ -27,7 +27,7 @@ title: Message
 | 参数 | 说明 | 类型 | 默认值 |
 | --- | --- | --- | --- |
 | content | 提示内容 | string\|ReactNode | - |
-| duration | 自动关闭的延时，单位秒 | number | 3 |
+| duration | 自动关闭的延时，单位秒。设为 0 时不自动关闭。 | number | 3 |
 | onClose | 关闭时触发的回调函数 | Function | - |
 
 还提供了全局配置和全局销毁方法：