change link from GitHub Linguist to LinguistJS

[Nixinova]

    Metrics uses LinguistJS now, should this be changed to link to that instead?

Originally posted by @Nixinova in #1277 (comment)

Changes the link from https://github.com/github/linguist to https://github.com/Nixinova/LinguistJS

[github-actions]

Hello there 👋!

It seems you have opened a pull request on either main, latest or examples.
These branches are fully-automated and do not accept human contributions.

• To contribute to metrics code, open a pull request to master branch
• To contribute to metrics presets, open a pull request to presets branch

Thanks for your cooperation 🦾!

[lowlighter]

Thanks !