add text and link

Author: SarahAlidoost

CODE_OF_CONDUCT.md

@@ -3,9 +3,7 @@ layout: page
 title: "Contributor Code of Conduct"
 ---
 As contributors and maintainers of this project,
-we pledge to follow the [Carpentry Code of Conduct][coc].
-
-Instances of abusive, harassing, or otherwise unacceptable behavior
-may be reported by following our [reporting guidelines][coc-reporting].
+we pledge to follow the
+[ESMValTool Code of Conduct](https://github.com/ESMValGroup/ESMValTool/blob/master/CODE_OF_CONDUCT.md).
 
 {% include links.md %}