chore(docs): fix url for reset function

[38elements]

Since the following url does not match a hash, this fixed it.

https://www.apollographql.com/docs/react/data/mutations#reset

https://www.apollographql.com/docs/react/data/mutations#mutationresult-interface-reset

[netlify]

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[changeset-bot]

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Latest commit: 2c63101

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[phryneas]

Thank you!