fix button text

Author: Yash094

apps/portal/src/app/page.tsx

@@ -46,7 +46,7 @@ function Hero() {
           <Link href="/chat">
             <Button className="flex items-center gap-2">
               <MessageCircleIcon className="size-4" />
-              Ask AI Assistant
+              Ask AI
             </Button>
           </Link>
         </div>