replaced old twitter icon

Author: Ronnit44

about.html

@@ -952,7 +952,7 @@ <h6 class="social-title">Follow Us</h6>
                 <i class="fab fa-github"></i>
               </a>
               <a target="_blank" href="https://twitter.com" class="social-link" aria-label="Twitter">
-                <i class="fab fa-twitter"></i>
+                <i class="fab fa-x-twitter"></i>
               </a>
             </div>
           </div>