fix more linting errors

mirrulations-extractor/src/mirrextractor/extractor.py

@@ -122,11 +122,11 @@ def update_stats():
  .make_attachment_save_path(complete_path)
  if not os.path.isfile(output_path):
  # Write an empty file. The extract_text method sometimes
- # fails with an out-of-memory error if the file is too 
- # large, and a restart would try again. This ensures 
- # that the extraction is not attempted again when the 
+ # fails with an out-of-memory error if the file is too
+ # large, and a restart would try again. This ensures
+ # that the extraction is not attempted again when the
  # extractor process is restarted (by Docker).
- with open(output_path, 'w') as f: 
+ with open(output_path, 'w') as f:
  pass
  start_time = time.time()
  Extractor.extract_text(complete_path, output_path)