fix(python): make document inclusion in docs allow relative paths.

[stevenj]

Description

Allows us to include documentation by a relative path for simpler management of related information.
Also makes sure all python code is properly formatted and linted and corrects any linting issues.

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[Mr-Leshiy]

LGTM