Remove changelog trailing spaces

Author: noellie-velez

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -15,8 +15,8 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 - Improve performance of `NetworkObject`. (#3820)
 - Rename pass:
-    - SceneObject -- > SerializedObject 
-    - GetMessageSceneObject --> Serialize 
+    - SceneObject -- > SerializedObject
+    - GetMessageSceneObject --> Serialize
     - AddSceneObject --> Deserialize (#3820)
 
 ### Deprecated