Update footer with project attribution and link

Author: JustinVerstijnen

index.html

@@ -38,7 +38,7 @@ <h1>Password Generator</h1>
         </div>
         <div class="footer">
             <a href="https://github.com/JustinVerstijnen/PasswordGenerator">
-                &copy; <span id="copyright-year">2025</span> Password Generator tool
+                &copy; <span id="copyright-year">2025</span> Password Generator tool by Justin Verstijnen. Click here to visit GitHub project.
             </a>
         </div>
     </div>