updated xiao docs

Author: pelikhan

website/docs/devices/shields/xiao-expansion-board.mdx

@@ -18,10 +18,10 @@ click the **wand** icon on the file menu and
 select "Seeed Xiao ESP32-C3 Expansion board".
 
 ```ts
-import { XiaoExpansionBoard } from "@devicescript/drivers"
+import { XiaoExpansionBoard, startCharacterScreen } from "@devicescript/drivers"
 const shield = new XiaoExpansionBoard()
 
-const display = await shield.startDisplay()
+const display = await startCharacterScreen(shield.startDisplay())
 const buzzer = await shield.startBuzzer()
 const button = await shield.startButton()
 ```