lingo: callback_url is not displayed as a link (#56646)

combo/apps/lingo/templates/lingo/paymentbackend_form.html

@@ -12,7 +12,7 @@
 {% block content %}
 <form method="post" enctype="multipart/form-data">
   {% if object.id and callback_url %}
-    <p><label>{% trans "Callback URL:" %}</label> <a href="{{ callback_url }}">{{ callback_url }}</a></p>
+    <p><label>{% trans "Callback URL:" %}</label> {{ callback_url }}</p>
   {% endif %}
   {% csrf_token %}
   {{ form.as_p }}

combo/apps/lingo/templates/lingo/regie_form.html

@@ -12,7 +12,7 @@
 {% block content %}
 <form method="post" enctype="multipart/form-data">
   {% if object.id and callback_url %}
-    <p><label>{% trans "Callback URL:" %}</label> <a href="{{ callback_url }}">{{ callback_url }}</a></p>
+    <p><label>{% trans "Callback URL:" %}</label> {{ callback_url }}</p>
   {% endif %}
   {% csrf_token %}
   {{ form.as_p }}

tests/test_lingo_manager.py

@@ -69,8 +69,11 @@ def test_edit_regie(app, admin_user, payment_backend):
     assert '/manage/lingo/regies/' in resp.text
 
     # callback URL is shown
-    assert 'Callback URL' in resp
-    assert 'http://testserver/lingo/callback-payment-backend/%s/' % payment_backend.slug in resp
+    assert (
+        '<p><label>Callback URL:</label> http://testserver/lingo/callback-payment-backend/%s/</p>'
+        % payment_backend.slug
+        in resp
+    )
 
     resp.forms[0]['description'] = 'other description'
     resp = resp.forms[0].submit()
@@ -636,8 +639,11 @@ def test_edit_payment_backend(app, admin_user):
     assert '/manage/lingo/paymentbackends/' in resp.text
 
     # callback URL is shown
-    assert 'Callback URL' in resp
-    assert 'http://testserver/lingo/callback-payment-backend/%s' % payment_backend.slug in resp
+    assert (
+        '<p><label>Callback URL:</label> http://testserver/lingo/callback-payment-backend/%s/</p>'
+        % payment_backend.slug
+        in resp
+    )
 
     # service cannot be changed
     assert 'disabled' in resp.form['service'].attrs