doc: simplify CODE_OF_CONDUCT.md

PR-URL: #23989
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

CODE_OF_CONDUCT.md

@@ -1,8 +1,4 @@
 # Code of Conduct
 
-The Node.js Code of Conduct document has moved to
-https://github.com/nodejs/admin/blob/master/CODE_OF_CONDUCT.md. Please update
-links to this document accordingly.
-
-The Node.js Moderation policy can be found at
-https://github.com/nodejs/admin/blob/master/Moderation-Policy.md
+* [Node.js Code of Conduct](https://github.com/nodejs/admin/blob/master/CODE_OF_CONDUCT.md)
+* [Node.js Moderation Policy](https://github.com/nodejs/admin/blob/master/Moderation-Policy.md)