Update public/index.html

public/index.html

@@ -343,7 +343,7 @@
              <!-- Grid column -->
           <div class="col-lg-3 col-md-6 mb-md-0 mb-5"> <!---  FGDI TODO: to change-->
             <div class="avatar mx-auto">
-              <img src="./imgs/avatar/Herbst.jpg" class="rounded-circle z-depth-1" width="100px">
+              <img src="imgs/grey_dot.png" class="rounded-circle z-depth-1" width="150px">
             </div>
             <h5 class="font-weight-bold mt-4 mb-3">Tim Herbst</h5>
              <p class="text-uppercase blue-text"><strong>Software Engineer</strong></p>
@@ -366,7 +366,7 @@
                <!-- Grid column -->
           <div class="col-lg-3 col-md-6 mb-md-0 mb-5"> <!---  FGDI TODO: to change-->
             <div class="avatar mx-auto">
-              <img src="./imgs/avatar/Jochim.jpg" class="rounded-circle z-depth-1" width="100px">
+              <img src="imgs/grey_dot.png" 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>Researcher</strong></p>