Update email code of conduct.

Author: bakercp

docs/CODE_OF_CONDUCT.md

@@ -55,7 +55,7 @@ a project may be further defined and clarified by project maintainers.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at [mailto][[email protected]]. All
+reported by contacting the project team at [[email protected]](mailto:[email protected]?subject=[GitHub]%20Code%20Of%20Conduct). All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.