Fix typo in docs: delete extra backtick

[jasongrout]

Description

Delete extra backtick in docs

Checklist

• PR has a descriptive title and content.
• PR description contains references to any issues the PR resolves, e.g. Resolves #XXX.
• PR has one of the labels: documentation, bug, enhancement, feature, maintenance
• Checks are passing.
  Failing lint checks can be resolved with:
  • pre-commit run --all-files
  • jlpm run lint

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📚 Documentation preview: https://jupytergis--868.org.readthedocs.build/en/868/
💡 JupyterLite preview: https://jupytergis--868.org.readthedocs.build/en/868/lite

[github-actions]

👈 Launch a Binder on branch jasongrout/jupytergis/doctypo

[github-actions]

Integration tests report: appsharing.space

[arjxn-py]

Thanks @jasongrout :)

For some reason the linter is angry :/
Sorry that it's annoying - you just have to run jlpm run lint locally once to make it happy.

[mfisher87]

We should add a bot command to lint :)

[mfisher87]

Great catch, thank you!