docs: show package tag instead of monorepo release in subpackage docs

[maxrjones]

Summary

This PR patches mkdocs to use the subpackage's tag instead of Zarr-Python core's in the docs header.

Before	After

For reviewers

Opinions on whether we should duplicate the patch on each sub-package (anti-DRY) or symlink (anti-windows).

Author attestation

• I am a human, these are my changes, and I have reviewed and understood every change and can explain why each is correct.

TODO

• Add unit tests and/or doctests in docstrings
• Add docstrings and API docs for any new/modified user-facing classes and functions
• New/modified features documented in docs/user-guide/*.md
• Changes documented as a new file in changes/
• GitHub Actions have all passed
• Test coverage is 100% (Codecov passes)

[d-v-b]

this is awesome max! short term i'm leaning anti DRY (pro duplication) but longer term this is something our docs dep should handle without modifications. we should investigate upstreaming this fix

[maxrjones]

this is awesome max! short term i'm leaning anti DRY (pro duplication) but longer term this is something our docs dep should handle without modifications. we should investigate upstreaming this fix

thanks for the prompt feedback. I consolidated both the patch script and the mkdocs configuration files.