docs(zh): fix wrong word

[SageKwun]

I think it might should be "中间件" rather than "中间价", maybe @HereIsYui chould help double check~

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Name	Status	Preview	Comments	Updated (UTC)
socket-io-website	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 25, 2023 5:15am

[HereIsYui]

It looks like there was a typo. Thank you for correcting it

[darrachequesne]

@SageKwun thanks!