Use backtick to format reference to file name in working-with-the-npm-registry#publishing-a-package-using-publishconfig-in-the-packagejson-file

[nguyenalex836]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-npm-registry#publishing-a-package-using-publishconfig-in-the-packagejson-file

This issue is intended for newcomers to the OS Docs repo! 💛

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What part(s) of the article would you like to see updated?

Verify the repository field in your project's package.json.

Format reference to file name using backticks per our style guide

Additional information

No response