Github workflows - Markdown lint tool

[Prome88]

Github workflows - Markdown lint tool for documentation.

The lint will fail due to few issues in the documentation MD files. Should I also fix those reported issues or wait for v9.0 documentation to do so?

[MathewSachin]

I tried looking around a bit if we can have the lint output viewable without having to see the whole GitHub action logs. It won't be very helpful otherwise. It should use GitHub Actions annotations and show like in this PR: ember-template-lint/ember-template-lint#966

And, do fix the issues for the current files otherwise this will just display all pull-requests as failing to pass tests.

[Prome88]

Documentation has been updated to reflect the markdown linter. Implementing viewable output is unfortunately beyond my capabilities.

Should I remove the linter from the commit and just push the updated documentation?