Updated StockFinancial to remove nested values

Author: justinpolygon

examples/rest/stocks-stock_financials.py

@@ -8,6 +8,6 @@
 client = RESTClient()  # POLYGON_API_KEY environment variable is used
 
 financials = []
-for f in client.vx.list_stock_financials("AAPL"):
+for f in client.vx.list_stock_financials("AAPL", filing_date="2024-11-01"):
     financials.append(f)
 print(financials)