fix: Updated old video link

docs/quick-start/developers/tic-tac-toe-dapp/index.md

@@ -10,8 +10,7 @@ description: Moderately difficult smart contract and dApp
 
 **Difficulty Level**: Moderate
 
-<iframe width="100%" style={{"aspect-ratio": "16 / 9"}} src="https://www.youtube.com/embed/9sefSIWX6Fw?si=2ijoq9jVnUFUohJ5" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
-
+<!-- <iframe width="100%" style={{"aspect-ratio": "16 / 9"}} src="https://www.youtube.com/embed/9sefSIWX6Fw?si=2ijoq9jVnUFUohJ5" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe> -->
 
 ## Step 1 - Setting up your development environment
 
@@ -973,4 +972,4 @@ With the foundation laid, consider advancing your Tic-Tac-Toe dApp with more sop
 
 Blockchain technology and decentralized applications offer limitless possibilities. With your Tic-Tac-Toe dApp, you're now poised to continue innovating and exploring new horizons with aelf. 🚀
 
-Happy coding and expanding your **Tic-Tac-Toe dApp!** 😊
+Happy coding and expanding your **Tic-Tac-Toe dApp!** 😊