Update email address in CoC

Author: rich-iannone

.github/CODE_OF_CONDUCT.md

@@ -61,8 +61,8 @@ or acting as an appointed representative at an online or offline event.
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may
 be reported to the community leaders responsible for enforcement at
-[rich@rstudio.com](mailto:rich@rstudio.com). All
-complaints will be reviewed and investigated promptly and fairly.
+[rich@posit.co](mailto:rich@posit.co). All complaints will be reviewed
+and investigated promptly and fairly.
 
 All community leaders are obligated to respect the privacy and security
 of the reporter of any incident.