chore: Update Code of Conduct to use new Reporting Guideline

Fixes #1571

Author: rpl

CODE_OF_CONDUCT.md

@@ -1,7 +1,10 @@
-Code of conduct
-===============
+# Community Participation Guidelines
 
 This repository is governed by Mozilla's code of conduct and etiquette guidelines.
-For more details please see the
-[Mozilla Community Participation Guidelines](https://www.mozilla.org/about/governance/policies/participation/)
-and [Developer Etiquette Guidelines](https://bugzilla.mozilla.org/page.cgi?id=etiquette.html).
+For more details, please read the
+[Mozilla Community Participation Guidelines](https://www.mozilla.org/about/governance/policies/participation/).
+
+## How to Report
+
+For more information on how to report violations of the Community Participation Guidelines,
+please read our '[How to Report](https://www.mozilla.org/about/governance/policies/participation/reporting/)' page.