Update token-gated-chat.mdx (#79)

Got some typo by mistake in the last update, this one will be final.

Author: shaki150697

token-gated-chat.mdx

@@ -4,8 +4,7 @@ title: "Video: Token Gated Chat"
 
 Watch Calum build an NFT-gated chat app with Polybase from scratch.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/dZfpdNJYZPc" title="Build an NFT Gated Chat App using Polybase | Tutorial by Calum" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
-
+<iframe width="560" height="315" src="https://www.youtube.com/embed/dZfpdNJYZPc" title="NFT Gated Chat App using Polybase" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
 
 ## Deployed app