Update public/demos.html

public/demos.html

@@ -327,7 +327,7 @@
           <!-- Grid column --> <!-- FGDI ToDo -->
           <div class="col-lg-3 col-md-6">
             <div class="avatar mx-auto">
-              <img src="./imgs/avatar/rosanny.jpg" class="rounded-circle z-depth-1" width="150px">
+              <img src="./imgs/avatar/sarah.png" class="rounded-circle z-depth-1" width="150px">
             </div>
             <h5 class="font-weight-bold mt-4 mb-3">Dr. Sarah Larsen-Vefring</h5>
             <p class="text-uppercase blue-text"><strong>Managing director research thrust 2</strong></p>
@@ -352,7 +352,7 @@
           <!-- Grid column --> <!-- FGDI ToDo -->
           <div class="col-lg-3 col-md-6 mb-md-0 mb-5">
             <div class="avatar mx-auto">
-              <img src="./imgs/avatar/PatrickSquare.jpg" class="rounded-circle z-depth-1" width="150px">
+              <img src="./imgs/avatar/sergej.png" class="rounded-circle z-depth-1" width="150px">
             </div>
             <h5 class="font-weight-bold mt-4 mb-3">Avatar </h5>
             <p class="text-uppercase blue-text"><strong>Researcher</strong></p>