Did you try to select the YAML syntax that's already built-in?
Thanks for getting back to me. Yes, I have tried out the YAML syntax highlighter thats built in and it works okay but definitely gets a bit confused when lines contain jinja. It's no big deal, just a 'nice to have'.
I’d like Nunjuck support, and the syntax is nearly identical so adding .njk to this should suffice
Customer support service by UserEcho