Update app.py

app.py

@@ -136,7 +136,7 @@ def create_certificate(passed, certificate_type, hf_username, first_name, last_n
         # Add a message
         message = """
         Congratulations, you successfully completed the Hugging Face Deep Reinforcement Learning Course 🎉! \n 
-        Since you pass 80% of the hands-on you get a Certificate of Completion 🎓. \n 
+        Since you pass 3 out of 4 of the hands-on you get a Certificate of Completion 🎓. \n 
         You can download your certificate below ⬇️ \n
         Don't hesitate to share your certificate image below on Twitter and Linkedin (you can tag me @mariakhalusova and @huggingface) 🤗 \n
         You can try to get a Certificate of Excellence if you pass 100% of the hands-on, don't hesitate to check which unit you didn't pass and update these models.