Fix a typo for deletion of a script not working

Author: pierok13

src/config/config_service.py

@@ -52,7 +52,7 @@ def _preprocess_incoming_config(config):
 def _create_archive_filename(filename):
     current_datetime = datetime.now()
     formatted_datetime = current_datetime.strftime('%Y%m%d%H%M%S')
-    return f"{formatted.datetime}_{filename}.deleted"
+    return f"{formatted_datetime}_{filename}.deleted"
 
 
 class ConfigService: