docs: fix links to Matrix examples

[AverageMarcus]

Changes

Fixed the links on the Matrix docs page to point to the examples on GitHub instead of relative URLs.

Submitter Checklist

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• [x] Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
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Release Notes

NONE

/kind documentation

[tekton-robot]

Hi @AverageMarcus. Thanks for your PR.

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[AverageMarcus]

/kind documentation

[afrittoli]

/ok-to-test

[afrittoli]

Thanks for this PR @AverageMarcus - I think the problem with this approach is that the GitHub links are not versioned, so all the versioned published docs on https://tekton.dev/docs will point the variable version on main for those files. I think an alternative solution may be to change the sync/publishing scripts on the website to point those URLs to GitHub at publishing time, using a version specific link.

[AverageMarcus]

Does that support pulling things from the examples directory though? Is there an existing place this is being done that I could copy?

[chitrangpatel]

/approve /lgtm

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