fix: improve readability

contrib/report_builders/templates/jinja2_report.html

@@ -188,6 +188,9 @@
 </div>
 <div id="password_auth">
     <div class="section_head password_auth_warning">Instance with enabled password authentication:</div>
+    {% if data.password_auth_enabled | length == 0 %}
+        None
+    {% endif %}
     <ol class="ip_list">
         {% for ip in data.password_auth_enabled %}
             <li>{{ ip }}</li>