index.md: update python verbose code

Author: Delta456

microsoft-edge/webdriver-chromium/index.md

@@ -246,7 +246,7 @@ var driver = new EdgeDriver(service);
 from selenium import webdriver
 from selenium.webdriver.edge.service import Service
 
-service = Service(verbose = True)
+service = Service(service_args=["--verbose"])
 
 driver = webdriver.Edge(service = service)
 ```