updated quickstart

Author: Gerome-Elassaad

quickstart.mdx

@@ -10,10 +10,8 @@ description: "Get started with CodinIT's AI-powered development platform in minu
   playsInline
   className="w-full aspect-video rounded-lg mb-6"
   src="/assets/videos/walkthrough.mp4"
-  aria-label="CodinIT platform walkthrough demonstration video"
->
-  CodinIT platform walkthrough demonstration video showing the development environment setup and key features
-</video>
+  alt="CodinIT platform walkthrough demonstration video"
+  />
 
 ## Start Building with AI in Three Steps