License Links in README about gnome-terminal

[arcticicestudio]

This is a leftover or rather a open task of nordtheme/web#133 (see section Similar Port Projects).
It's also some kind of legacy leftover due to the fact that the main arcticicestudio/nord repository (and so the whole Nord project) was “double-licensed“. Back in the days the idea was to use the CC BY-SA license for “artistic“ elements of the project, like e.g. the color palettes itself, while the “code“ elements like the official Sass/Less/CSS/Stylus/etc. resources. This was changed during the Nord Docs transition by using only the MIT license since it was sufficient to clarify that Nord is a project for both code and art with the smallest set of restrictions through the MIT license.

Regarding this port project the badge will be gone when the tasks of nordtheme/web#133 have been done for this repository like all the other also did (e.g. see the README in nordtheme/jetbrains@9ebc900 or nordtheme/vim@de24841).

Anyway, thanks for your effort in updating this as well as all the other Nord repositories you've already submitted PRs for 😄
Feel free to close this issue if this answered your question, otherwise we can still leave it open and close it when the PR for nordtheme/web#133 has been merged.