Update public/index.html

public/index.html

@@ -334,7 +334,7 @@
               <div class="col-lg-3 col-md-6 mb-lg-0 mb-5">
                   
                     <div class="avatar mx-auto">
-                      <img src="imgs/grey_dot.png" class="rounded-circle z-depth-1" width="150px">
+                      <img src="https://transfer.hft-stuttgart.de/pages/zedflow/knight/assets/images/Jochim.jpg" class="rounded-circle z-depth-1" width="150px">
                     </div>
                     <h5 class="font-weight-bold mt-4 mb-3">Niko Jochim</h5>
                     <p class="text-uppercase blue-text"><strong>Academic staff member</strong></p>