Used app_config.verbose_name instead of app_label|capfirst.

{% block breadcrumbs %}

<div class="breadcrumbs">

<a href="{% url 'admin:index' %}">{% trans 'Home' %}</a>

&rsaquo; <a href="{% url 'admin:app_list' app_label=opts.app_label %}">{{ app_label|capfirst }}</a>

&rsaquo; <a href="{% url 'admin:app_list' app_label=opts.app_label %}">{{ opts.app_config.verbose_name }}</a>

&rsaquo; <a href="{% url opts|admin_urlname:'changelist' %}">{{ opts.verbose_name_plural|capfirst|escape }}</a>

&rsaquo; <a href="{% url opts|admin_urlname:'change' object.pk|admin_urlquote %}">{{ object|truncatewords:"18" }}</a>

› {% trans 'Delete' %}