Add links checker job for deployments-k8s

[denis-tingaikin]

Motivation

We need to check that all links from our examples are correct and users can use our examples without problems.

Solution

1. See at PR from @edwarnicke Add markdown link checking #4048
2. Research similar links action that will allow to skip/validate links that contains ref parameter.

If there are no such link check actions then consider contributing a patch into any of the links checker actions to extend functionality.

Also, consider creating our own action-based based on docker GitHub action https://docs.github.com/en/actions/creating-actions/creating-a-docker-container-action