Add dataset links and semantic changes

[KaiWaldrant]

Describe your changes

• Added url to the benchmark datasets that link to the dataset page
• Add "n cells x m genes" to datasetinfo instead of "n x m"
• Fix used in links on the datasets details pages

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• I have performed a self-review of my code

• Check the correct box. Does this PR contain:

  • Breaking changes
  • New functionality
  • Major changes
  • Minor changes
  • Bug fixes

• Proposed changes are described in the CHANGELOG.md

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[github-actions]

[KaiWaldrant]

Noticed an issue with datasets in spatial decomposition. It lists DESTVI but is not submitted to the datasets pages because this is a simulated dataset. https://feature-no-ref-add-dataset-return-link--openproblems.netlify.app/results/spatial_decomposition/#dataset-info

[rcannood]

I also notice that for this dataset

https://feature-no-ref-add-dataset-return-link--openproblems.netlify.app/datasets/tenx_visium/post_xenium/human_colon_cancer/

The "Used in" link isn't working. I can imagine why this is, but could you take a look?

[rcannood]

Noticed an issue with datasets in spatial decomposition. It lists DESTVI but is not submitted to the datasets pages because this is a simulated dataset. https://feature-no-ref-add-dataset-return-link--openproblems.netlify.app/results/spatial_decomposition/#dataset-info

Is it possible to only add a link if that dataset exists?

[rcannood]

See other comments ^^

[rcannood]

LGTM!