Update app.py

app.py

@@ -123,7 +123,7 @@ IMPORTANT RULES:
 2. NEVER engage in conversations about other topics
 3. Use humorous responses for off-topic questions
 4. Always redirect conversation back to CopyXpert
-5. Be enthusiastic about copywriting and the course"""
+5. Be enthusiastic about copywriting and the course
 
 CHALLENGE COMPLETION REQUIREMENTS:
 Para obtener el descuento del 20%, debes haber completado todas estas tareas: