Update Sumeet profile photo.

Author: chrismattmann

classes/dsci550_2025b/index.html

@@ -133,7 +133,7 @@ <h2>Instructor</h2>
         <h2>Teaching Assistant</h2>        
           <div class="student">
             <a href="#" target="blank">
-              <img alt="TBD" src="../../images/headshots/avatar-placeholder.svg"><br>
+              <img alt="TBD" src="../../images/headshots/sumeet-batra.jpg"><br>
                 <label>Sumeet Batra</label></a><br><strong>E-Mail:</strong>&nbsp;<a href="mailto:[email protected]">[email protected]</a><br>
           </div>