feat: Use heading + description

src/fellchensammlung/templates/fellchensammlung/partials/partial-adoption-notice.html

@@ -1,4 +1,4 @@
-    {% load custom_tags %}
+{% load custom_tags %}
 {% load i18n %}
 
 <div class="card">

src/fellchensammlung/templates/fellchensammlung/partials/partial-map.html

@@ -19,8 +19,9 @@
 
     {% for an in adoption_notices %}
         // create the popup
-        const popup_{{ forloop.counter }} = new maplibregl.Popup({offset: 25}).setText(
-            '{{ an.name }}'
+        const popup_{{ forloop.counter }} = new maplibregl.Popup({offset: 25}).setHTML(`
+            <h1>{{ an.name }}</h1><p>{{ an.description }}</p>
+            `
         );
 
         // create DOM element for the marker