Be clearer about the templates needed to go live

Adding a ‘testing’ template it not enough. It needs to have some real
looking content, so that we can:
- work out what a service is doing
- assess whether that’s a reasonable (ie meeting the terms of use) thing
  to be doing with Notify

At the moment we’re having to go back to services quite a lot when they
request to go live and ask them for this stuff.

tests/app/main/views/test_service_settings.py

@@ -460,9 +460,9 @@ def test_should_raise_duplicate_name_handled(
     (2, 'Done: Have more than one team member with the ‘Manage service’ permission'),
 ])
 @pytest.mark.parametrize('count_of_templates, expected_templates_checklist_item', [
-    (0, 'Not done: Create some templates'),
-    (1, 'Done: Create some templates'),
-    (2, 'Done: Create some templates'),
+    (0, 'Not done: Create templates showing the kind of messages you plan to send'),
+    (1, 'Done: Create templates showing the kind of messages you plan to send'),
+    (2, 'Done: Create templates showing the kind of messages you plan to send'),
 ])
 @pytest.mark.parametrize('count_of_email_templates, reply_to_email_addresses, expected_reply_to_checklist_item', [
     pytest.mark.xfail((0, [], ''), raises=IndexError),