Fix(URLs): Update URLs for demo projects.

index.html

@@ -278,7 +278,7 @@
                         <li>E-commerce integration with multiple storefronts</li>
                     </ul>
                     <p style="margin-bottom: 1rem"><strong>Technologies:</strong> Python, MySQL / MariaDB, Docker</p>
-                    <a href="https://sandbox.ERPNext.partsltd.co.uk/" class="button">View Demo Site</a>
+                    <a href="https://sandbox.partsenterprise.partsltd.co.uk/" class="button">View Demo Site</a>
                 </div>
                 <div class="project-card">
                     <h3>partsERP Core Framework</h3>
@@ -292,7 +292,7 @@
                     </ul>
                     <p style="margin-bottom: 1rem"><strong>Technologies:</strong> Python - Flask, MySQL / MariaDB, JavaScript</p>
                     <a href="https://github.com/Teddy-1024/demo_partsERP.git" class="button">View on GitHub</a>
-                    <a href="https://sandbox.partsERP.partsltd.co.uk/" class="button">View Demo Site</a>
+                    <a href="https://sandbox.partsERP.teddy.org.uk/" class="button">View Demo Site</a>
                 </div>
                 <div class="project-card">
                     <h3>Excel Data Synchronisation Tool</h3>
@@ -429,4 +429,4 @@
         });
     </script>
 </body>
-</html>
+</html>