Add federated keyless example (#831)

Author: 0xjunha

apps/nextra/pages/en/build/guides/aptos-keyless/federated-keyless/_meta.tsx

@@ -5,6 +5,9 @@ export default {
   "integration-guide": {
     title: "Integration Guide",
   },
+  "simple-example": {
+    title: "Simple Example",
+  },
   other: {
     title: "FAQs",
   },

apps/nextra/pages/en/build/guides/aptos-keyless/federated-keyless/simple-example.mdx

@@ -0,0 +1,11 @@
+---
+title: "Federated Keyless Simple Example"
+---
+
+# Federated Keyless Simple Example
+
+The Federated Keyless Example shows how to set up a Federated Keyless account using Auth0 as the IAM provider.
+
+Explore the code in [aptos-keyless-example repository](https://github.com/aptos-labs/aptos-keyless-example/tree/main/examples/federated-keyless-example/).
+
+The Keyless Simple Example is currently undergoing maintenance. Please check back later.

apps/nextra/pages/en/build/guides/aptos-keyless/simple-example.mdx

@@ -4,11 +4,11 @@ title: "Keyless Simple Example"
 
 # Keyless Simple Example
 
-Explore the code in [aptos-keyless-example repository](https://github.com/aptos-labs/aptos-keyless-example/).
+Explore the code in [aptos-keyless-example repository](https://github.com/aptos-labs/aptos-keyless-example/tree/main/examples/keyless-example/).
 
 The Keyless Simple Example is currently undergoing maintenance. Please check back later.
 
-This is a live Keyless example on CodeSandbox. Follow the instructions in the `README.md` to add your own Google `client_id`. Explore the code in [aptos-keyless-example repository](https://github.com/aptos-labs/aptos-keyless-example/).
+This is a live Keyless example on StackBlitz. Follow the instructions in the `README.md` to add your own Google `client_id`. Explore the code in [aptos-keyless-example repository](https://github.com/aptos-labs/aptos-keyless-example/tree/main/examples/keyless-example/).
 
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