* Katacoda shutdown notice for the Kubernetes blog
SIG Docs has confirmed with O'Reilly that Katacoda tutorials for the Kubernetes community will be shutting down on 31 March, 2023. This blog post serves as an announcement to the community, 6 weeks before the intended shutdown date.
* Updating filename to correct format
* Apply Rey's feedback adding link to GitHub discussion
Co-authored-by: Rey Lejano <rlejano@gmail.com>
* Fix issue with link in Markdown from review
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Co-authored-by: Rey Lejano <rlejano@gmail.com>