fix: Typo in preprocessing function name

app.py

@@ -24,7 +24,7 @@ model_to_use = {
     "Use all the ones you know (~15 lang)": "paraphrase-multilingual-MiniLM-L12-v2"
 }
 
-def remove_unk_chars(txt_list: List[str]):
+def _remove_unk_chars(txt_list: List[str]):
     txt_list = [re.sub('\s+', ' ', tweet) for tweet in txt_list]
     txt_list = [re.sub("\'", "", tweet) for tweet in txt_list]
     txt_list = [deaccent(tweet).lower() for tweet in txt_list]