The Code of Conduct would only be edited with the agreement of the global leadership.
Now, technically, its source including translations live at https://github.com/rladies/.github/blob/master/CODE_OF_CONDUCT.md
Link to either the Code of Conduct on the R-Ladies website or the source on GitHub (if you want to refer to a translation that isn’t on the R-Ladies website yet).
If you use the Code of Conduct somewhere that’s supposed to be long-lived, be careful to have a process in place to ensure that the Code of Conduct rendered on your thing keeps in sync with the code of conduct source.
For an event that happens only once, you could copy-paste from the code of conduct source.
This is a suggested workflow. It is very important to have a process in place for keeping the code of conduct content in your website in sync with the code of conduct source.