plusses in frontpage buttons

_includes/frontpage/title-content.html

@@ -8,13 +8,13 @@
             <i class="fas fa-user-plus"></i> HIFIS Services for you
         </a>
         <a href="{{ '/services/training' | relative_url }}" class="btn btn-light btn-lg text-dark">
-            <i class="fas fa-university"></i> Education &amp; Training
+            <i class="fas fa-university"></i> Education + Training
         </a>
         <a href="https://hifis-tp.desy.de/oauth2/authorization/unity" class="btn btn-light btn-lg text-dark">
             <i class="fas fa-cloud"></i> Helmholtz Cloud (login)
         </a>
         <a href="{{ '/contact.html' | relative_url }}" class="btn btn-light btn-lg text-dark">
-            <i class="fas fa-question"></i> Consulting, Support &amp; Contact
+            <i class="fas fa-question"></i> Consulting, Support + Contact
         </a>
     </div>
 </div>