docs(coagents): make overview the index of travel tutorial and add redirect

Signed-off-by: Tyler Slaton <tyler@copilotkit.ai>

docs/content/docs/coagents/tutorials/ai-travel-app/meta.json

@@ -1,7 +1,7 @@
 {
   "title": "Tutorial: AI Travel App",
   "pages": [
-    "overview",
+    "index",
     "step-1-checkout-repo",
     "step-2-langgraph-agent",
     "step-3-setup-copilotkit",

docs/next.config.mjs

@@ -12,6 +12,16 @@ const config = {
     SCARF_PIXEL_ID: process.env.SCARF_PIXEL_ID,
     CLERK_PUBLISHABLE_KEY: process.env.CLERK_PUBLISHABLE_KEY || "pk_live_Y2xlcmsuY29waWxvdGtpdC5haSQ",
   },
+
+  async redirects() {
+    return [
+      {
+        source: '/coagents/tutorials/ai-travel-app/overview',
+        destination: '/coagents/tutorials/ai-travel-app',
+        permanent: true,
+      },
+    ];
+  },
 };
 
 export default withMDX(config);