More missing translations 🌍

ref #69

src/components/donors/DonorDetail.svelte

@@ -296,7 +296,7 @@
       <div class="ml-3 text-sm">
         <label
           for="comments"
-          class="font-medium text-gray-700">Receipt needed (address)</label>
+          class="font-medium text-gray-700">{$_('receipt-needed')}</label>
       </div>
     </div>
     {#if editable.address_checked === true}