Kirki: Muli Google font

[pudelis]

Issue description:

We have been used google font Muli in theme martfury. After update to version 3.1.5. Font is gone.

Version used:

(Did you try using the develop branch from GitHub? There's a chance your issue has already been addressed there)

Using theme_mods or options?

Code to reproduce the issue (config + field(s))

[DannyCooper]

Muli has been renamed - https://github.com/google/fonts/pull/2504

[pudelis]

Thank You for fast respond :)