update en/application-dev/reference/arkui-ts/ts-basic-components-scrollbar.md.

Signed-off-by: Nking_he <6384784@qq.com>

en/application-dev/reference/arkui-ts/ts-basic-components-scrollbar.md

 # ScrollBar
 
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
+> **NOTE**<br>
 > This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
 
 
@@ -29,7 +29,7 @@ ScrollBar(value: ScrollBarOptions)
   | direction | ScrollBarDirection | No | ScrollBarDirection.Vertical | Scrollbar direction in which scrollable components scroll. |
   | state | BarState | No | BarState.Auto | Scrollbar state. |
 
-  > ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
+  > **NOTE**<br>
   > The **&lt;ScrollBar&gt;** component defines the behavior style of the scrollable area, and its subnodes define the behavior style of the scrollbar.
   > 
   > This component is bound to a scrollable component through **scroller**, and can be used to scroll the scrollable component only when their directions are the same. The **&lt;ScrollBar&gt;** component can be bound to only one scrollable component, and vice versa.
@@ -43,9 +43,9 @@ ScrollBar(value: ScrollBarOptions)
 - BarState enums
   | Name | Description | 
   | -------- | -------- |
-  | On | Always display. | 
-  | Off | Hide. | 
-  | Auto | Display on demand (displays when the screen is touched and disappears after 2s of inactivity). | 
+  | On | Always display the scrollbar. | 
+  | Off | Hide the scrollbar. | 
+  | Auto | Display the scrollbar on demand (for example, display the scrollbar when the screen is touched or hide the scrollbar after 2s of inactivity). | 
 
 
 ## Example