Update mention of `SparkDataSet` to `SparkDataset` in data catalog image

[merelcht]

Description

Part of https://github.com/kedro-org/kedro/issues/2129

Development notes

• Updated SparkDataSet to SparkDataset in the link.
• Used carbon.now.sh to also generate an updated version of the image.

QA notes

Checklist

• [ ] Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• [ ] Added tests to cover my changes, where applicable

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