chore: update the nginx-agent.conf example to Agent V3 version. (#855)

* chore: update the nginx-agent.conf example to Agent V3 version.

Author: yluf5

content/nginx-one/connect-instances/set-up-nginx-proxy-for-nginx-one.md

@@ -70,17 +70,16 @@ To set up your other NGINX instances to use the proxy instance to connect to NGI
 3. Add the following configuration. Replace `YOUR_DATA_PLANE_KEY_HERE` with your actual data plane key and `YOUR_PROXY_IP_ADDRESS_HERE` with the IP address of the NGINX proxy instance.
 
     ```yaml
-    server:
-      # Replace YOUR_DATA_PLANE_KEY_HERE with your NGINX One Data Plane Key.
-      token: "YOUR_DATA_PLANE_KEY_HERE"
-      # Replace YOUR_PROXY_IP_ADDRESS_HERE with the IP address of the NGINX proxy instance.
-      host: YOUR_PROXY_IP_ADDRESS_HERE
-      grpcPort: 5000
-      command: agent.connect.nginx.com
-      metrics: agent.connect.nginx.com
-    tls:
-      enable: true
-      skip_verify: false
+    command:
+      server:
+        # Replace YOUR_PROXY_IP_ADDRESS_HERE with the IP address of the NGINX proxy instance.
+        host: YOUR_PROXY_IP_ADDRESS_HERE
+        port: 443
+      auth:
+        # Replace YOUR_DATA_PLANE_KEY_HERE with your NGINX One Console data plane key.
+        token: "YOUR_DATA_PLANE_KEY_HERE"
+      tls:
+        skip_verify: False
     ```
 
 4. Restart NGINX Agent: