Fix the use of OPEN_AI_KEY

Fashion_MVP_v0_0_2.ipynb

@@ -271,7 +271,7 @@
         "    MJ_AUTH = os.environ['MJ_AUTH']\n",
         "\n",
         "client = OpenAI(\n",
-        "        api_key=userdata.get('OPEN_AI_KEY'), # 'OPENAI_API_KEY'\n",
+        "        api_key=OPEN_AI_KEY, # 'OPENAI_API_KEY'\n",
         "        base_url=\"https://api.openai.com/v1/\"\n",
         "    )\n",
         "\n",

app.py

@@ -98,7 +98,7 @@ else:
     MJ_AUTH = os.environ['MJ_AUTH']
 
 client = OpenAI(
-        api_key=userdata.get('OPEN_AI_KEY'), # 'OPENAI_API_KEY'
+        api_key=OPEN_AI_KEY, # 'OPENAI_API_KEY'
         base_url="https://api.openai.com/v1/"
     )