What content needs to be created or modified?
Contributor guides in docs and across all repos need to be modified to reflect new DCO and Code of Conduct requirements since onboarding to CNCF.

Describe the solution you'd like
Code of conduct should reflect https://github.com/dapr/dapr/blob/master/GOVERNANCE.md#code-of-conduct
DCO requirements should reflect https://github.com/apps/dco (KEDA has a good example)

Where should the new material be placed?
https://docs.dapr.io/contributing/contributing-overview/
CONTRIBUTING.md files across all repos

The associated pull request from dapr/dapr, dapr/components-contrib, or other Dapr code repos

Additional context