Update index.html

Author: vipulvyas

index.html

@@ -26,6 +26,7 @@
                 <li><a href="#about" class="menu-btn">About</a></li>
                 <li><a href="#services" class="menu-btn">Services</a></li>
                 <li><a href="#skills" class="menu-btn">Skills</a></li>
+                <li><a href="#timeline" class="menu-btn">Timeline</a></li>
                 <li><a href="#teams" class="menu-btn">Teams</a></li>
                 <li><a href="#contact" class="menu-btn">Contact</a></li>
             </ul>
@@ -173,7 +174,7 @@ <h2 class="title">My skills</h2>
         </div>
     </section>
 
-    <section class="timeline">
+    <section class="timeline" id="timeline">
         <ol>
           <li>
             <div>