Config.toml: How to translate navs, footers etc. in [extra] section

Hi, I currently have an [extra] section that looks like this:

[extra]
nav = [
  { name = "Tjenester", path = "/tjenester" },
  { name = "Kontakt", path = "/kontakt" },
  { name = "Om oss", path = "/om" },
]
footer = [
  { name = "Våre klienter", path = "/klienter" },
  { name = "Bli medlem", path = "/bli-medlem" },
  { name = "Nyheter", path = "/nyheter" },
]

This is in Norwegian, which is the default language of the site. I am currently translating the site to English, and have been trying to be able to translate the nav and footer so that “Tjenester” becomes “Services”, etc.
How should I go about doing this? The documentation on multilingual sites doesn’t seem to cover this.

I can share our PR if this is not enough information.
Thanks!