[py] fix linting errors

Author: titusfortner

py/test/unit/selenium/webdriver/common/common_options_tests.py

@@ -92,6 +92,6 @@ def test_enable_bidi():
 
 def test_set_socket_url():
     options = ArgOptions()
-    options.web_socket_url = 'socket_url'
+    options.web_socket_url = "socket_url"
     assert options.enable_bidi is True
-    assert options.web_socket_url is 'socket_url'
+    assert options.web_socket_url == "socket_url"