[Docs] Formatting fix for auditbeat system socket

[martin389]

In System socket dataset, a bullet list does not render correctly:

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This PR adds the following changes:

• Reformats the bullet list
• Updates the list to use the existing convention of * instead of -

Proposed commit message

Adds documentation fix for bulleted list.

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

No impact

Author's Checklist

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Related issues

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