The goal of Django’s contribution guide like every other documentation is to guide user, open-source contributors in this case on how and where they can contribute to making Django better and sustainable.
There’s always a need to make documentations especially one that greatly affects the community and Django itself.
The goal of Django for this 2020 Google Summer of Docs is to make the Contribution guide less overwhelming, accessible, and welcoming to contributors. This is a goal which is essential as it encourages contributors, getting started to contribute to this great framework.