index.md format is not right

[tukwila]

Describe the bug
A clear and concise description of what the bug is.
In the following docs, key sections list format is not right:

1. docs/index.md

2. docs/guides/index.md

3. docs/getting-started/index.md

4. docs/developer/index.md

Expected behavior
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Environment
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1. OS [e.g. Ubuntu 20.04]: Monterey
2. Python version [e.g. 3.12.2]: Python 3.11.5
3. guidellm version: 0.5.0.dev10

To Reproduce
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Errors
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Additional context
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[sjmonson]

This is intentional as the docs are in MkDocs format.