PR: Fix incorrect "CO2" concentration scaling in colour.phenomena.rayleigh.F_air_Bodhaine1999 definition.

[KelSolaar]

Summary

Title says it all, closes #307, thanks to @chnmasta05!

Preflight

Code Style and Quality

• Unit tests have been implemented and passed.
• Pyright static checking has been run and passed.
• Pre-commit hooks have been run and passed.
• [N/A] New transformations have been added to the Automatic Colour Conversion Graph.
• [N/A] New transformations have been exported to the relevant namespaces, e.g. colour, colour.models.

Documentation

• [N/A] New features are documented along with examples if relevant.
• [N/A] The documentation is Sphinx and numpydoc compliant.

[coveralls]

coverage: 99.781%. remained the same when pulling 5f8e6db on feature/rayleigh into 284f586 on develop.