[jan-glx]

Updates the intro of the docs landing page (docs/index.md) to match the new SpatialData specifications site:

• SpatialData as an open framework that defines a common data model and storage format, with libraries in Python, R, JavaScript and others.
• States that this site documents the Python spatialdata library, and links the specifications for the language-independent definitions of datasets and their on-disk representation.

Draft until the specifications site is published at https://scverse.org/spatialdata-spec/ (the link 404s until then). The spec landing page links back here (scverse/spatialdata-spec#56).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.43%. Comparing base (1d5dcbe) to head (f4cab63).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1290   +/-   ##
=======================================
  Coverage   91.43%   91.43%           
=======================================
  Files          53       53           
  Lines        8395     8395           
=======================================
  Hits         7676     7676           
  Misses        719      719           

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.