**Is your feature request related to a problem? Please describe.** The Authoring Stacks (https://docs.devfile.io/devfile/2.1.0/user-guide/authoring-stacks.html) needs to be reviewed and updated to follow Red Hat documentation and style guide principles. **Describe the solution you'd like** The content is consistent with language and style principles used by upstream Red Hat documentation projects. **Related issue** See the related issue #182.