Notification default: Make sure to use atleast some text here, a blank notification body could be problematic for some services

backend/store.py

@@ -42,7 +42,7 @@ class ChangeDetectionStore:
                     'notification_urls': [], # Apprise URL list
                     # Custom notification content
                     'notification_title': 'ChangeDetection.io Notification - {watch_url}',
-                    'notification_body': '{base_url}'
+                    'notification_body': '{watch_url} had a change.'
                 }
             }
         }