Update app.py

app.py

@@ -18,7 +18,7 @@ def clear(user_message, chat_history):
 
 
 def respond(openai_apikey, chat_history): 
-    oepnai.api_key = openai_apikey
+    openai.api_key = openai_apikey
     re_messages = system_prompt
     for chat in chat_history[0:-1]: 
         re_messages.append({"role": "user", "content": chat[0]})