docs-utils: make reference table of content in alphabetical order

[shahednasser]

Make table of contents in references in alphabetical order, similar to the sidebar.

Closes DX-856

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Name	Status	Preview	Comments	Updated (UTC)
api-reference	🔄 Building (Inspect)	Visit Preview	💬 Add feedback	Nov 13, 2024 3:59pm
docs-ui	🛑 Canceled (Inspect)			Nov 13, 2024 3:59pm
medusa-dashboard	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 13, 2024 3:59pm

4 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
api-reference-v2	⬜️ Ignored (Inspect)	Visit Preview		Nov 13, 2024 3:59pm
docs-v2	⬜️ Ignored (Inspect)	Visit Preview		Nov 13, 2024 3:59pm
medusa-docs	⬜️ Ignored (Inspect)	Visit Preview		Nov 13, 2024 3:59pm
resources-docs	⬜️ Ignored (Inspect)	Visit Preview		Nov 13, 2024 3:59pm

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