Update link to test262-harness repo

Author: ryzokuken

README.md

@@ -42,7 +42,7 @@ This project offers an explanation for many of its design decisions and maintena
 
 Volunteer-maintained projects that may be used to execute Test262 in various ECMAScript hosts:
 
-- https://github.com/bterlson/test262-harness (platform: Node.js)
+- https://github.com/tc39/test262-harness (platform: Node.js)
 - https://github.com/test262-utils/test262-harness-py (platform: Python)
 - https://bakkot.github.io/test262-web-runner/ (platform: web)
 - https://github.com/Izhido/test262_harness_cpp (platform: C++)