Update team 8's demo URL because of server failure

[SadPencil]

Our previous URL was served by a Spot Instance from Tencent Cloud and was forcely reclaimed. We have migrated these files to AWS without any changes.

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Name	Status	Preview	Comments	Updated (UTC)
eth-beijing	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 10, 2023 2:19pm