chore: Naming consistency and changelog fix (#2582)

Author: ShadauxCat

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -12,7 +12,7 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 - Added support for serializing `NativeArray<>` and `NativeList<>` in `FastBufferReader`/`FastBufferWriter`, `BufferSerializer`, `NetworkVariable`, and RPCs. (To use `NativeList<>`, add `UNITY_NETCODE_NATIVE_COLLECTION_SUPPORT` to your Scripting Define Symbols in `Project Settings > Player`) (#2375)
 - The location of the automatically-created default network prefab list can now be configured (#2544)
-- Added: Message size limits (max single message and max fragmented message) can now be set using NetworkManager.SetMaxSingleMessageSize() and NetworkManager.SetMaxFragmentedMessageSize() for transports that don't work with the default values (#2530)
+- Added: Message size limits (max single message and max fragmented message) can now be set using NetworkManager.MaximumTransmissionUnitSize and NetworkManager.MaximumFragmentedMessageSize for transports that don't work with the default values (#2530)
 - Added `NetworkObject.SpawnWithObservers` property (default is true) that when set to false will spawn a `NetworkObject` with no observers and will not be spawned on any client until `NetworkObject.NetworkShow` is invoked. (#2568)
 
 ### Fixed

com.unity.netcode.gameobjects/Runtime/Core/NetworkManager.cs

@@ -585,7 +585,7 @@ private void OnEnable()
         /// This should represent the transport's MTU size, minus any transport-level overhead.
         /// </summary>
         /// <param name="size"></param>
-        public int MaxTransmissionUnitSize
+        public int MaximumTransmissionUnitSize
         {
             set => MessageManager.NonFragmentedMessageMaxSize = value;
             get => MessageManager.NonFragmentedMessageMaxSize;