Update app.py

app.py

@@ -137,7 +137,7 @@ def talk2file(index_name, text):
     context2html = markdown2.markdown(docs[0].page_content)
     context = f'<span style="background-color: #ADD8E6;">{context2html}</span>'
     Title3 = '<h2 style="background-color: #90EE90;"><b>Ansewr: </b></h2>'
-    answer = f'<span style="background-color: #90EE90;">{system_message['content']}</span>'
+    answer = f'<span style="background-color: #90EE90;">{system_message["content"]}</span>'