[8.15] [OAS][DOCS] Clarify license, version, and source URL (#192145)

[lcawl]

Backport

This will backport the following commits from main to 8.15:

• [OAS][DOCS] Clarify license, version, and source URL (#192145)

Questions ?

Please refer to the Backport tool documentation

[obltmachine]

🤖 GitHub comments

Expand to view the GitHub comments

Just comment with:

• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: e705363

Failed CI Steps

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[florent-leborgne]

🚀