Clarify who receives Code of Conduct reports
As per https://github.com/mozilla/diversity/blob/master/evaluation_tools/governance-basic.md, we should make it clear who receives the Code of Conduct reports that are sent to firstname.lastname@example.org.
For example, if someone has an issue with someone else subscribed on email@example.com they might not feel like reporting there.
Parent Task: #16783
- Related to #16814