Update app.py

app.py

@@ -12,7 +12,7 @@ import vertexai
 PROJECT_ID = "franz-media-1512554302520"
 LOCATION = "us-central1"
 CRED_PATH = "creds.json"
-with open(CRED_PATH,"w") a f:
+with open(CRED_PATH,"w") as f:
     f.write(os.environ["GCP_VERTEXAI_CRED"])
 credentials = service_account.Credentials.from_service_account_file(CRED_PATH)
 vertexai.init(project=PROJECT_ID, location=LOCATION,credentials=credentials)