fix: update official invalid example to match tutorial

[derberg]

making sure invalid example match the one mentioned in tutorial

https://v3.asyncapi.com/docs/tutorials/studio-document-validation

marked as fix as I kinda assume it will be automatically released once I do it

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[KhudaDad414]

LGTM!

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Kudos, SonarCloud Quality Gate passed!   

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[KhudaDad414]

/rtm