Update header HTML

Author: Vanita Barrett

lib/source/layouts/_header.erb

@@ -41,9 +41,9 @@
     </div>
     <% if config[:tech_docs][:header_links] %>
     <div class="govuk-header__content">
-      <button type="button" class="govuk-header__menu-button govuk-js-header-toggle" aria-controls="navigation" aria-label="Show or hide Top Level Navigation">Menu</button>
-      <nav>
-        <ul id="navigation" class="govuk-header__navigation govuk-header__navigation--end" aria-label="Top Level Navigation">
+      <nav class="govuk-header__navigation govuk-header__navigation--end" aria-label="Menu">
+        <button type="button" class="govuk-header__menu-button govuk-js-header-toggle" aria-controls="navigation" aria-label="Show or hide menu">Menu</button>
+        <ul id="navigation" class="govuk-header__navigation-list">
           <% config[:tech_docs][:header_links].each do |title, path| %>
             <li class="govuk-header__navigation-item<% if active_page(path) %> govuk-header__navigation-item--active<% end %>">
               <a class="govuk-header__link" href="<%= url_for path %>"><%= title %></a>