Update the CDP Mode docs

Author: mdmintz

examples/cdp_mode/ReadMe.md

@@ -420,8 +420,10 @@ sb.cdp.minimize()
 sb.cdp.medimize()
 sb.cdp.set_window_rect()
 sb.cdp.reset_window_size()
+sb.cdp.open_new_window(url=None, switch_to=True)
 sb.cdp.switch_to_window(window)
 sb.cdp.switch_to_newest_window()
+sb.cdp.open_new_tab(url=None, switch_to=True)
 sb.cdp.switch_to_tab(tab)
 sb.cdp.switch_to_newest_tab()
 sb.cdp.close_active_tab()