fix typo

app.py

@@ -34,7 +34,7 @@ def callapi(p, msgs):
     for m in msgs:
         data = data + [
             {"role":"user", "content":m[0]},
-            {"role":"assistent", "content":m[1]}
+            {"role":"assistant", "content":m[1]}
         ]
     data = data + [{"role":"user", "content":p}]
     response = openai.ChatCompletion.create(