Fix regex in merge_ellipsis function to correctly replace multiple periods

utils.py

@@ -785,7 +785,7 @@ def merge_ellipsis(seg_labels):
     df2.append(merge_utt) # catch final merge_utt if not terminated
 
     df2=pd.DataFrame(df2)
-    df2['utterance']=df2['utterance'].str.replace('\.+',' ', regex=True)
+    df2['utterance']=df2['utterance'].str.replace('\\.+',' ', regex=True)
     
     # clear up "......"
     # enumerate utterances