<strong><span data-defer-to="<%= view.defer_key %>-duration">...</span> / <span data-defer-to="<%= view.defer_key %>-calls">...</span></strong> dalli

<strong>
  <span id="peek-dalli-tooltip">
    <span data-defer-to="<%= view.defer_key %>-duration">...</span> / <span data-defer-to="<%= view.defer_key %>-calls">...</span>
  </span>
</strong> dalli

Add span element for tooltip
Add span element for tooltip
