Update templates/about.html

templates/about.html

@@ -17,7 +17,7 @@
         </div>
 
         <div class="about-image">
-            <img src="{{ url_for('static', filename='images/cell_diagram.png') }}"
+            <img src="{{ url_for('static', filename=cell_diagram.png') }}"
                  alt="Eukaryotic cell diagram showing organelles">
         </div>