Text about security settings needs to be updated

reported by translator, confirmed by me. thanks _Kate!

in https://tb-manual.torproject.org/security-settings/ ACCESSING THE SECURITY SETTINGS we tell the users: 'To view and adjust your Security Settings, click the 'Advanced Security Settings...' button in the shield menu.'

But there is no such button when you click, as the image shows:

We should update the text or the image.