Remove empty section tag from index.html

Removed an empty section tag from the HTML.

Author: edleon123

index.html

@@ -28,8 +28,6 @@ <h2>Welcome!</h2>
                 I'm a student using computational chemistry to study biological systems. 
                 This blog shares notes, methods, and research updates.
             </p>
-        </section>
-
 
         <img src="images/Picture2.png" alt="Methylparaben de-attaching from androgen receptor LBD-BF3 site" class="intro-image">