Update DEVELOPMENT.md - fix broken link

[clintonsteiner]

Removed in tektoncd/pipeline#8429

Changes

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• [ X] Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
• [ X] Has Tests included if any functionality added or changed
• [ X] Follows the commit message standard
• [X ] Meets the Tekton contributor standards (including functionality, content, code)
• [ X] Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• [X ] Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings). See some examples of good release notes.
• [ X] Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

NONE