Update app.py

app.py

@@ -166,6 +166,7 @@ When choosing a recipe from the context, FOLLOW these instructions:
 2. If the recipes from the context makes sense but do not match {question}, generate an amazing, specific recipe for {question} 
    with precise steps and measurements. Take some inspiration from context if availab.e
 3. Following the above template.
+4. If the query makes no sense, return []
 
 
 Context: {context}