Add yaml schema to markdownlint configs

[lukaw3d]

Adds code-completion, at least in vscode. Should this be propagated to everywhere?

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e32d603) 81.29% compared to head (af61952) 81.47%.
Report is 1 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1828      +/-   ##
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+ Coverage   81.29%   81.47%   +0.17%     
==========================================
  Files         192      192              
  Lines        5053     5042      -11     
  Branches      933      923      -10     
==========================================
  Hits         4108     4108              
+ Misses        945      934      -11     

Flag	Coverage Δ
cypress	46.05% <ø> (ø)
jest	77.30% <ø> (+0.16%)	⬆️

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see 1 file with indirect coverage changes

[buberdds]

How do you invoke code-completion here?
I don't see any differences between master branch for ctrl+space or when I type something in yaml

[lukaw3d]

oh. apparently it's from extension: https://marketplace.visualstudio.com/items?itemName=redhat.vscode-yaml#associating-a-schema-in-the-yaml-file. Then ctrl+space