Update app.py

app.py

@@ -389,8 +389,7 @@ with interface:
   
   gr.Markdown("## PDF Examples")
   gr.Examples(
-      examples=[[os.path.join(os.path.abspath(""), "Article 7 Efficient Estimation of Word Representations in Vector Space.pdf")],
-                [os.path.join(os.path.abspath(""), "Article 11 Hidden Technical Debt in Machine Learning Systems.pdf")]],
+      examples=[os.path.join(os.path.abspath(""), "Article 11 Hidden Technical Debt in Machine Learning Systems.pdf")],
       inputs=uploaded_article,
       outputs=[summarized_abstract, talked_abstract],
       fn=sum_audio,