add link to datadog-ci readme for sbom generation

Author: jbcibois-ddhq

content/en/security/code_security/software_composition_analysis/setup_static/_index.md

@@ -431,4 +431,4 @@ Datadog stores findings in accordance with our [Data Rentention Periods](https:/
 [19]: https://cyclonedx.org/docs/1.5/json/
 [20]: https://cyclonedx.org/docs/1.6/json/
 [21]: https://docs.github.com/en/repositories/working-with-files/managing-large-files/about-git-large-file-storage
-
+[22]: https://github.com/DataDog/datadog-ci/tree/master/packages/plugin-sbom