[feat] added Vanessa

Author: marcusdgriff

images/headshots/vanessa-guevara.png

@@ -269,7 +269,7 @@ <h3>Lab members</h3>
 
                     <figure class="col-4">
                       <figure>
-                        <a class="image fit"> <img src="images/headshots/placeholder.png" alt="placeholder">
+                        <a class="image fit"> <img src="images/headshots/vanessa-guevara.png" alt="placeholder">
                         </a>
                       </figure>
                       <figcaption> <u>Vanessa Guevara | Laboratory Assistant</u>. </figcaption>