[docs] Update governance process links

[esmeetu]

Signed-off-by: esmeetu jasonailu87@gmail.com

Purpose

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
• (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

[mergify]

Documentation preview: https://vllm--32995.org.readthedocs.build/en/32995/

[gemini-code-assist]

Code Review

This pull request updates the docs/governance/process.md file. The changes primarily involve reformatting the lists of Core Maintainers and Lead Maintainers, explicitly titling the 'Responsibilities' sections, and standardizing bullet points from * to -. These are stylistic improvements that enhance the readability and consistency of the documentation.