Update app.py

app.py

@@ -166,7 +166,7 @@ iface = gr.Interface(
         gr.Textbox(label="Bert F1-Score")
     ],
     title="PDF Abstract Summarizer and Audio Converter",
-    description="Upload a PDF file to extract and summarize its 'abstract' section. The best summary sentence based on its Bert F1-score will be converted into speech and the score's interpretation will be displayed."
+    description="Upload a PDF file to extract and summarize its 'abstract' section. The best summary sentence based on its Bert F1-score will be converted into speech and the score's interpretation will be displayed. (A PDF file needs to contain the Abstract section.)"
 )
 
 iface.launch()