Include language code alongside label in Schema Config

`en-uk` and `en-gb` both have `British English` label, making them hard to differentiate from each other:

<img width="2560" alt="Screen Shot 2022-07-26 at 14 45 27" src="https://user-images.githubusercontent.com/40512816/181098984-d3b12591-2219-4593-bfdf-40ae0b69f461.png">
