Update official links to use json-render.dev domain

- Change dashboard example Docs link from json-render.vercel.app to json-render.dev
- Change Svelte Chat demo URL from json-render-svelte-chat-demo.labs.vercel.dev to svelte-chat-demo.json-render.dev

Fixes #264

Author: ctate

apps/web/lib/examples.ts

@@ -53,7 +53,7 @@ export const examples: Example[] = [
     description: "AI chat app built with SvelteKit and the Svelte renderer.",
     tags: ["Svelte", "SvelteKit", "AI"],
     githubPath: "examples/svelte-chat",
-    demoUrl: "https://json-render-svelte-chat-demo.labs.vercel.dev",
+    demoUrl: "https://svelte-chat-demo.json-render.dev",
   },
   {
     slug: "vue",

examples/dashboard/components/header.tsx

@@ -47,7 +47,7 @@ export function Header() {
         </div>
         <nav className="flex items-center gap-4">
           <a
-            href="https://json-render.vercel.app"
+            href="https://json-render.dev"
             target="_blank"
             rel="noopener noreferrer"
             className="text-sm text-muted-foreground hover:text-foreground transition-colors"