Remove moot data-toggle="tooltip" (#2861)

Tooltips need to be manually initialized which didn't happen.

Also, streamline tag indentation a bit

starter.html

@@ -134,8 +134,9 @@ scratch. This page gets rid of all links and provides the needed markup only.
         </div>
       </li>
       <li class="nav-item">
-        <a class="nav-link" data-widget="control-sidebar" data-slide="true" href="#" role="button"><i
-            class="fas fa-th-large"></i></a>
+        <a class="nav-link" data-widget="control-sidebar" data-slide="true" href="#" role="button">
+          <i class="fas fa-th-large"></i>
+        </a>
       </li>
     </ul>
   </nav>