publish: practical guide to embedded linux logging

 ### Summary

practical guide to embedded linux logging is ready to publish! 🎉 Thank you to @grace-nordic for
submitting.

 ### Test Plan

 <details>
 <summary>Publishing checklist</summary>

- [x] Is the date correct?
- [x] Is the URL correct?
- [x] Is the markdown file name correct? (date and article)
- [x] Is the title optimized for SEO?
- [x] Are there tags added?
- [x] Is the meta description added?
- [x] Do we have full author info?
- [x] Is the excerpt correct?
- [x] Do all links work?
- [x] Have all images rendered correctly?
- [x] Have all code snippets rendered correctly?
- [x] Have we cross linked to all relevant preexisting articles?
      (i.e. related content, other articles in a series, etc.)

 </details>

Author: gminn