Code quality

[c-martinez]

The Turing Way does not include a section on this topic -- is this something we could contribute from the guide?

Turing Way issue the-turing-way/the-turing-way#882

[bouweandela]

Code quality is mentioned here:
https://the-turing-way.netlify.com/version_control/version_control.html#what-to-learn-next
use functions etc, last paragraph of https://the-turing-way.netlify.com/testing/testing.html#how-this-will-help-you-why-this-is-useful
benefits of writing modular code: last two paragraphs of https://the-turing-way.netlify.com/testing/testing.html#benefits-of-unit-testing
style is mentioned here: https://the-turing-way.netlify.com/reviewing/01/how_helpful.html#style-enforcement
and linked to (broken link) here: https://the-turing-way.netlify.com/reviewing/03/typical_workflows.html#prepare-the-code

[bouweandela]

Made a pull request here: the-turing-way/the-turing-way#898