Update app.py

output format fix

app.py

@@ -31,7 +31,7 @@ def summarize(inputs,model,summary_length):
   #we decode the predictions to store them
   decoded_predictions = tokenizer.batch_decode(preds, skip_special_tokens=True)
   #return 
-  return decoded_predictions
+  return decoded_predictions[0]
 
 description = "Quickly summarize your German text in a few sentences. \nThe algorithm was fine-tuned on high-quality German news articles."