chore: docs

Author: ron0115

README.md

@@ -8,7 +8,7 @@ If you want to control the `speed` of scroll behaviour, it defaults to use `requ
 
 **Examples are <a target="_blank" href="https://ron0115.best/react-smooth-scroll-hook/?path=/docs/usesmoothscroll--docs#basic" >Here</a>.**(Storybook)
 
-**Live demo is <a target="_blank" href="https://codesandbox.io/s/react-smooth-scroll-hook-vhudw?file=/src/App.js" >Here</a>.**(Codesandbox)
+**Live demo is <a target="_blank" href="https://codesandbox.io/s/reverent-cerf-ks4xh?file=/index.tsx" >Here</a>.**(Codesandbox)
 
 ## Feature