Bugfix/smartops 2900 fix doc version switcher

[srethore]

Title

• Update the doc/_static/switcher_config.json manually as done in the MCH template.
• Add it in the PR checklist
• Fix the link to CONTRIBUTING as it does not work in PyPi without the path defined.

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Description:

Please describe the changes made in this PR. If it introduces breaking changes, mention them here.

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Error(s) fixed:

Please tag them using #, e.g. Fixed #42.

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Related issue

Closes #ISSUE_ID or References #ISSUE_ID

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Checklists:

• New code includes dedicated tests.
• New code has been linted.
• New code follows the project's style.
• New code is compatible with the 3-Clause BSD license.
• No sensitive data or secrets are exposed
• CHANGELOG has been updated.
• docs have been updated
• code authors have been updated in CITATION.cff.
• Copyright years in module docstrings have been updated.

[pjuda]

Thank you for the merge request. Approved