Change website URL in readme

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Name	Status	Preview	Comments	Updated (UTC)
ukoly	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 11, 2024 7:35pm

[macaquedev]

also there are some editorials which have links to ukoly.vercel.app, please change them

[macaquedev]

@myst-6

[myst-6]

kk