use ui_texts.title_name for host_stats card-header

data/web/templates/debug.twig

@@ -32,7 +32,7 @@
 
         <div class="card mb-4">
           <div class="card-header fs-5">
-            <span>mailcow</span>
+            <span>{{ ui_texts.title_name|raw }}</span>
           </div>
           <div class="card-body">
             <div class="row">