Update Configure Group -> How to Contribute to Auto DevOps

Why is this change being made?

The link to the "GDK -> Kubernetes How-To" page results in a 404. (see screenshot below)

The link points to a page under the master branch, but it looks like master has been moved to main. This change updates the link to the page mentioned.

• old link: https://gitlab.com/gitlab-org/gitlab-development-kit/-/tree/master/doc/howto/kubernetes
• new link after edit: https://gitlab.com/gitlab-org/gitlab-development-kit/-/tree/main/doc/howto/kubernetes

Page Screenshot

Author Checklist

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
  • Copy/paste the Slack conversation to document it for later, or upload screenshots. Verify that no confidential data is added.
• Assign reviewers for this MR to the correct Directly Responsible Individual/s (DRI)
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to one of the people listed in the Maintained by section on the page being edited
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies
• If the changes affect team members, or warrant an announcement in another way, please consider posting an update in #whats-happening-at-gitlab linking to this MR
  • If this is a change that directly impacts the majority of global team members, it should be a candidate for #company-fyi. Please work with internal communications and check the handbook for examples.

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