Docs: Fix incorrect Docker autodiscover and add_docker_metadata default config value in documentation

[zhanqian-zhang]

Docs

Proposed commit message

Fix documentation to reflect the actual config field value used by the Docker autodiscover provider and add_docker_metadata processor. https://github.com/elastic/beats/blob/5d9efc36dfe314b6e3e56704b816681278841922/libbeat/autodiscover/providers/docker/config.go#L53 https://github.com/elastic/beats/blob/5d9efc36dfe314b6e3e56704b816681278841922/libbeat/processors/add_docker_metadata/config.go#L51

Checklist

• [ ] My code follows the style guidelines of this project
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have made corresponding change to the default configuration files
• [ ] I have added tests that prove my fix is effective or that my feature works. Where relevant, I have used the stresstest.sh script to run them under stress conditions and race detector to verify their stability.
• [ ] I have added an entry in ./changelog/fragments using the changelog tool.

Disruptive User Impact

Author's Checklist

• [ ]

How to test this PR locally

Related issues

Use cases

Screenshots

Logs

[github-actions[bot]]

:robot: GitHub comments

Just comment with:

• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[mergify[bot]]

This pull request does not have a backport label. If this is a bug or security fix, could you label this PR @zhanqian-zhang? 🙏. For such, you'll need to label your PR with:

• The upcoming major version of the Elastic Stack
• The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed branches, such as:

• backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit
• backport-active-all is the label that automatically backports to all active branches.
• backport-active-8 is the label that automatically backports to all active minor branches for the 8 major.
• backport-active-9 is the label that automatically backports to all active minor branches for the 9 major.

[github-actions[bot]]

🔍 Preview links for changed docs

• docs/reference/filebeat/add-docker-metadata.md
• docs/reference/filebeat/configuration-autodiscover.md

[zhanqian-zhang]

I don’t have permission to add labels. Could you please help add "backport-active-all" labels? 🙏

[bmorelli25]

Thank you! And thanks for linking to the code.

[elasticmachine]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)

[pierrehilbert]

/test