Update content/packages-and-modules/securing-your-code/trusted-publishers.mdx

Co-authored-by: Karen Li <[email protected]>

Author: leobalter

content/packages-and-modules/securing-your-code/trusted-publishers.mdx

@@ -267,3 +267,5 @@ We intend to expand trusted publishing support to additional CI/CD providers and
 - [OpenSSF Trusted Publishers specification](https://repos.openssf.org/trusted-publishers-for-all-package-repositories)
 - [GitHub Actions OIDC documentation](https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/about-security-hardening-with-openid-connect)
 - [GitLab CI/CD OIDC documentation](https://docs.gitlab.com/ee/ci/cloud_services/)
+- [API documentation for exchanging OIDC ID token for npm registry token](https://api-docs.npmjs.com/#tag/registry.npmjs.org/operation/exchangeOidcToken)
+