Remove country from affiliations in tutorial page

Co-authored-by: michael-schwarz <13812333+michael-schwarz@users.noreply.github.com>

Author: Copilot

src/app/goblint/goblint.component.html

@@ -10,10 +10,10 @@ <h2 class="m-5">Mixed Flow-Sensitive Static Analysis: Engineering Modularity</h2
 
 <div class="row d-flex justify-content-center">
   <ol>
-    <li>Technical University of Munich, Germany</li>
-    <li>University of Tartu, Estonia</li>
-    <li>CISPA Helmholtz Center for Information Security, Germany</li>
-    <li>National University of Singapore, Singapore</li>
+    <li>Technical University of Munich</li>
+    <li>University of Tartu</li>
+    <li>CISPA Helmholtz Center for Information Security</li>
+    <li>National University of Singapore</li>
   </ol>
 </div>