Update app.py

app.py

@@ -327,7 +327,7 @@ with st.sidebar:
 
         if extraction_mode == "Custom field extraction":
             custom_fields = st.text_area(
-                "Enter fields to extract (comma separated):",
+                "Enter fields to extract (comma separated or your prompt here):",
                 value="Invoice number, Date, Company name, Total amount"
             )
             fields = [f.strip() for f in custom_fields.split(",") if f.strip()]