Can't pass settings from config.yaml octoprint

Hi guys and girls !!!!

I try to follow this tutorial :octoprint documentation

But I think I'm fail when I need to "Let’s change the URL! Open up your OctoPrint instance’s config.yaml file and add the following to it (if a plugins section doesn’t yet exist in the file, create it):"

I add well my config but when I add this into the init.py, nothing works :

    def get_template_configs(self):    return [        dict(type="navbar", custom_bindings=False),        dict(type="settings", custom_bindings=False)    ]   

Can you help please ?