doc: fix keyObject.symmetricSize to be keyObject.symmetricKeySize
This PR fixes wrong property in crypto documentation for an API added in 11.6.0
cc @tniessen
k = crypto.createSecretKey(Buffer.from('foo'))
// SecretKeyObject { [Symbol(kKeyType)]: 'secret' }
k.symmetricSize
// undefined
k.symmetricKeySize
// 3
Checklist
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documentation is changed or added -
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