typo in preprocessing?

Hi,
In cleaning function in the script : `nlp-tutorial/news-category-classifcation/preprocessing.py`,
line 21 is written as `text = re.sub(r'[!]{2,}', '?', text) # multiple ?s -> ?`. There should be ? in first argument and It should be `text = re.sub(r'[?]{2,}', '?', text) # multiple ?s -> ?`.
Am I correct?