Update CHANGELOG.md

Changing the PR number to this PR.

Author: NoelStephensUnity

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -15,7 +15,7 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 ### Fixed
 
-- Fixed `NullReferenceException` on `NetworkList` when used without a NetworkManager in scene. (#2539)
+- Fixed `NullReferenceException` on `NetworkList` when used without a NetworkManager in scene. (#3502)
 - Fixed inconsistencies in the `OnSceneEvent` callback. (#3487)
 - Fixed issue where `NetworkClient` could persist some settings if re-using the same `NetworkManager` instance. (#3494)
 - Fixed issue where a pooled `NetworkObject` was not resetting the internal latest parent property when despawned. (#3494)