Fix broken docker link

[ChrsMark]

Fixes #

Changes

The link https://docs.docker.com/engine/reference/run/#container-identification is outdated. This makes the markdown-link-check to fail.

Spotted at https://github.com/open-telemetry/semantic-conventions/actions/runs/10383411357/job/28748273043?pr=1251.

Merge requirement checklist

• [x] CONTRIBUTING.md guidelines followed.
• [x] Change log entry added, according to the guidelines in When to add a changelog entry.
  • If your PR does not need a change log, start the PR title with [chore]
• [x] schema-next.yaml updated with changes to existing conventions.

[ChrsMark]

Hmm, it seems that docker's doc pages are failing here there actually 🤔 .

[jsuereth]

Sometimes websites prevent bots from hitting them. We may want to remove dockerhub as a validated location in the link checker...

[lmolkova]

I think it'll self-heal - https://github.com/docker/docs/pull/20606

[lmolkova]

I think it'll self-heal - docker/docs#20606

self-healed!