frappe/webnotes/templates/includes/breadcrumbs.html

{% if parents -%}
<ul class="breadcrumb">
	{% for parent in parents %}
		<li><a href="/{{ parent.name|lower }}">{{ parent.page_title or parent.title }}</a></li>
	{% endfor %}
	<li class="active">{{ title }}</li>
</ul>
{%- endif %}