[fix] typo: dues --> does

     {{ tab_header('enginetab', 'category' + categ, _(categ), ns.checked )}}

     {% set ns.checked = false %}

     {% if categ == DEFAULT_CATEGORY %}

      <p>{{_('This tab dues not exists in the user interface, but you can search in these engines by its !bangs.')}} <a href="{{ url_for('info', pagename='search-syntax') }}">&#9432;</a></p>

      <p>{{_('This tab does not exists in the user interface, but you can search in these engines by its !bangs.')}} <a href="{{ url_for('info', pagename='search-syntax') }}">&#9432;</a></p>

     {% endif %}

    <div class="scrollx">

    <table class="striped table_engines">