Replace visitor count badge with shield format

Updated visitor count badge and added refresh date.

Author: brown9804

3_networking/application-gateway/README.md

@@ -63,7 +63,9 @@ terraform apply
 | `virtual_network_name` | The name of the virtual network |
 | `subnet_name` | The name of the subnet used by the Application Gateway |
 
+<!-- START BADGE -->
 <div align="center">
-  <h3 style="color: #4CAF50;">Total Visitors</h3>
-  <img src="https://profile-counter.glitch.me/brown9804/count.svg" alt="Visitor Count" style="border: 2px solid #4CAF50; border-radius: 5px; padding: 5px;"/>
+  <img src="https://img.shields.io/badge/Total%20views-1459-limegreen" alt="Total views">
+  <p>Refresh Date: 2025-10-15</p>
 </div>
+<!-- END BADGE -->