Update doc/api/cli.md

Author: cjihrig

doc/api/cli.md

@@ -2315,7 +2315,7 @@ finished executing even if the event loop would otherwise remain active.
 added: v22.8.0
 changes:
   - version: REPLACEME
-    pr-url: https://github.com/nodejs/node/pull/xxxxx
+    pr-url: https://github.com/nodejs/node/pull/56298
     description: Test isolation configuration is now stable.
 -->