Removed an excess blank line in the template of the cash summary in the accounting application.

accounting/templates/accounting/cash_summary.html

@@ -163,7 +163,6 @@ First written: 2020/7/15
       </li>
     {% endfor %}
   </ul>
-
 {% else %}
   <p>{{ _("There is currently no data.")|force_escape }}</p>
 {% endif %}