Update check_openapi_version.py

Author: mlcivilengineer

scripts/check_openapi_version.py

@@ -21,7 +21,7 @@
 # if the version is different, print a message
 latest_folder_path = "./openapi_specs/latest"
 files = os.listdir(latest_folder_path)
-first_openapi_file = next((f for f in file_names if f.startswith("openapi-v")), None)
+first_openapi_file = next((f for f in files if f.startswith("openapi-v")), None)
 file_path = os.path.join(latest_folder_path, first_openapi_file)
 with open(file_path, 'r') as file:
     openapi_spec = json.load(file)