chore: update reporting email address

[mrjoelkamp]

summary

• updates reporting email address to conduct@docker.com
• adds open source projects to list of applicability

This is an attempt to partially fix https://github.com/docker/code-of-conduct/issues/34 without invalidating all of the language translations.

[sanscontext]

It looks like I no longer have write access, so tagging, ah... @mikesir87 ?

[thaJeztah]

looks like I still have access