We should try to set proper language code in translation files. This includes both README and docs translations.

🐞 Problem
As I've already noticed in the issue for Bosnian language, some languages doesn't have it's own code in the file name, so it can cause confusion.

💡 Possible solutions
Hello @Roshanjossey, maybe we can list all wrong codes in this issue and give a chance to the community to fix the namings.
As a reference, we can use ISO 639 list. If a language has two-letter code, use it. If not, use the three-letter code.
We can exclude non-regular languages from this list, like pirate and alien languages.