docs: updated readme

Author: Jaynil1611

README.md

@@ -4,4 +4,4 @@ This repository consists of the code for Nested Comment & Reply Feature
 ## Blog Link
 
 ## CodeSandBox Link
-[![Edit optimised-nested-comments](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/optimised-nested-comments-4cqcbx?fontsize=14&hidenavigation=1&theme=dark)
+[![Edit optimised-nested-comments](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/optimised-nested-comments-4cqcbx?fontsize=14&hidenavigation=1&theme=dark&view=preview)