Fix peak memory in query details UI
The name of this field changed in the QueryStats json causing it to be empty
in the query details UI.
@@ -1205,7 +1205,7 @@ let QueryDetail = React.createClass({
Peak Memory
</td>
<td className="info-text">
- { query.queryStats.peakMemoryReservation }
+ { query.queryStats.peakUserMemoryReservation }
</td>
</tr>
<tr>
