[sdk docs] Added mermaid ref

[ronny-mysten]

Description

Was unable to build site locally to test. Trying to get mermaid graph to render here: https://sdk.mystenlabs.com/typedoc/index.html

Test plan

https://sui-typescript-docs-7fcypvvd6-mysten-labs.vercel.app/typedoc/index.html

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Release notes

Check each box that your changes affect. If none of the boxes relate to your changes, release notes aren't required.

For each box you select, include information after the relevant heading that describes the impact of your changes that a user might notice and any actions they must take to implement updates.

• Protocol:
• Nodes (Validators and Full nodes):
• Indexer:
• JSON-RPC:
• GraphQL:
• CLI:
• Rust SDK:
• REST API:

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Name	Status	Preview	Comments	Updated (UTC)
sui-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 26, 2024 3:12pm

3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
multisig-toolkit	⬜️ Ignored (Inspect)	Visit Preview		Sep 26, 2024 3:12pm
sui-kiosk	⬜️ Ignored (Inspect)	Visit Preview		Sep 26, 2024 3:12pm
sui-typescript-docs	⬜️ Ignored (Inspect)	Visit Preview		Sep 26, 2024 3:12pm

[hayes-mysten]

it looks like this isn't working. I think this plugin might only apply to the typedoc comments, and not the the readme. I think the real issue is this readme isn't actually relevant to the sdk docs

ignore this, its working correctly:

https://sui-typescript-docs-git-fork-ronny-mysten-qf-80bb65-mysten-labs.vercel.app/typedoc/index.html

[hayes-mysten]

The logo isn't rendering correctly, we probably need to change the image at the top of the readme at the root of the repo to https://raw.githubusercontent.com/MystenLabs/sui/refs/heads/main/docs/site/static/img/logo.svg (using the raw url rather than the github url directly, which can't be rendered externally)