Language xml not supported

Hi there, I just noticed there's error pops up when language is `xml`. However xml is a supported language listed [here](https://github.com/rajinwonderland/react-code-blocks/blob/master/LANGUAGES.md), can anyone help with this? Thank you!

<img width="598" alt="image" src="https://user-images.githubusercontent.com/50149228/227009519-adf7b8de-7f71-4603-98be-014539913a7a.png">
