code: function highlightKeywords() {
        var q = url('?q');
        if (q !== null) {
          var keywords = q.split("%20");
          keywords.forEach(function (keyword) {
            if (keyword !== "") {
              $('.data-searchable *').mark(keyword);
              $('article *').mark(keyword);
            }
          });
        }
      }
docs: Highlight the searching keywords