Add essential comma in template rendering

NAERSTADMO.py

@@ -143,7 +143,7 @@ def create_warning_status(start_date):
          "mapserver_mapfile_dir": os.getenv("MAPSERVER_MAPFILE_DIR"),
          "mapserver_log_file": os.getenv("MAPSERVER_LOG_FILE"),
          "mapserver_image_path": os.getenv("MAPSERVER_IMAGE_PATH"),
-         "mapserver_extent": os.getenv("MAPSERVER_EXTENT")
+         "mapserver_extent": os.getenv("MAPSERVER_EXTENT"),
          "languages": languages,
          "language_codes": language_codes
     })