Use updated docs link for the Validate tab popover

What does this MR do and why?

The popover in the Validate tab has a Learn more link that points the CI Lint docs instead of the pipeline editor docs. This MR should fix the issue.

Screenshots or screen recordings

Screen_Recording_2022-08-01_at_17.56.48

How to set up and validate locally

1. Enable the simulate_pipeline feature flag.
2. Go to the pipeline editor. (CI/CD > Editor)
3. Visit the Validate tab then hover over the popover.
4. The Learn More link should link to the correct docs (Pipeline Editor docs instead of CI Lint docs)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.