Fix a bug in summarization

summarization.py

@@ -24,7 +24,7 @@ def ssum_for_file(input, num_beams=1, num_return_sequences=1) -> List[Tuple[str,
         results = ssum_pipeline.predict(filename, type="txt", num_beams=num_beams,
                                        num_return_sequences=num_return_sequences, save_results=False)
     elif filename[-4:] == ".pdf":
-        results = summ_pipeline.predict(filename, num_beams=num_beams, num_return_sequences=num_return_sequences, save_results=False)
+        results = ssum_pipeline.predict(filename, num_beams=num_beams, num_return_sequences=num_return_sequences, save_results=False)
     else:
         return [("File Format Error !", None)]