change openai key

app.py

@@ -77,7 +77,7 @@ def transcribe_audio(audio_path: str) -> str:
     Returns:
         str : Transcription of the audio.
     """
-    client = openai.Client(api_key=os.getenv("OPEN_AI_API_KEY"))
+    client = openai.Client(api_key=os.getenv("OPENAI_API_KEY"))
     with open(audio_path, "rb") as audio:                 # to modify path because it is arriving from gradio
         transcript = client.audio.transcriptions.create(
         file=audio,