update embl.de references

Update src/component-templates/ErrorPages/ErrorPage404.jsx, src/components/content/work-at-embl/conditions-employment/VisaRequirement.jsx files

src/component-templates/ErrorPages/ErrorPage404.jsx

@@ -24,7 +24,7 @@ export function ErrorPage404() {
           <h3>Need assistance?</h3>
           <a
             className="vf-button vf-button--primary"
-            href="https://www-db.embl.de/EMBLPersonGroup-PersonPicture/MailForm/?recipient=websupport"
+            href="https://www.embl.org/contact/websupport/"
           >
             Contact web support
           </a>