Add missing builder keys and fix broken link

[nerolation]

I fixed the broken link and added the pubkeys of

• one early used builder
• SGX builder
• TDX builder

[vercel[bot]]

@nerolation is attempting to deploy a commit to the Flashbots Team on Vercel.

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[odysseus0]

Thanks a lot!

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
flashbots-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 20, 2024 4:21am

[odysseus0]

Thanks a ton