Fix spacing in Apache license header

[Madhura0807]

Updated the Sphinx documentation configuration to improve source-code linking and documentation setup.

Changes

• Added/updated linkcode_resolve in docs/conf.py to generate GitHub links to documented Python source code.
• Updated the Sphinx documentation configuration.
• Cleaned up spacing in the Apache license header.

How I tested this

• Ran the Sphinx documentation build:
  python -m sphinx -b html docs docs/_build/html
• Build completed successfully with 187 warnings.

Notes

The changes are limited to the Sphinx documentation configuration in docs/conf.py.

Checklist

• PR has an informative and human-readable title (this will be pulled into the release notes)
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality.