use full uri for search link

Author: jean-gui

templates/components/styles/global_nav.html.twig

@@ -45,7 +45,7 @@
                 </li>
             {% endfor %}
             <li class="top-nav-item">
-                <a hreflang="en" href="/help/search/" class="nav-link icon-link">
+                <a hreflang="en" href="https://www.w3.org/help/search/" class="nav-link icon-link">
                     <img class="icon" src="{{ absolute_url(asset('svg/search.svg', 'website-2021')) }}" width="24" height="24" alt aria-hidden="true"><span class="hide-at-max-width">{{ 'header.search_link'|trans({}, 'w3c_website_templates_bundle') }}</span>
                 </a>
             </li>