Update MPPM version to 1.4.0 GA release (#1421)

Co-authored-by: Vic Cooper <vic.cooper@unity3d.com>

Author: johann-r-unity

docusaurus.config.js

@@ -389,7 +389,7 @@ module.exports = {
         lastVersion: "current",
         versions: {
           current: {
-            label: "1.4.0-pre",
+            label: "1.4.0",
             path: "current",
           },
           "1.3.3": {

mppm/about.md

@@ -8,7 +8,7 @@ Use Multiplayer Play Mode to test multiplayer functionality within the Unity Edi
 
 ## Compatibility
 
-Multiplayer Play Mode version 1.4.0-pre is compatible with Unity Editor versions 6000.0.22f1 or later.
+Multiplayer Play Mode version 1.4.0 is compatible with Unity Editor versions 6000.1.0b6 or later.
 
 ## Multiplayer Play Mode terminology
 

mppm/release-notes/release-notes.md

@@ -4,14 +4,6 @@ title: Release notes
 description: Release notes for Multiplayer Play Mode including new features, updates, bug fixes, and known issues.
 ---
 
-## [1.3.3] - 2024-12-17
-
-### Added
-- Fixed an `ArgumentNullException` issue that occurs across an MPPM upgrade with an actively set Play Mode Scenario configuration.
-
-### Fixed
-- Fixed an issue where project settings were not getting propagated to Virtual Players when entering Play mode via the play button.
-
 ## [1.4.0-pre.1] - 2024-12-05
 
 ### Fixed
@@ -22,6 +14,14 @@ description: Release notes for Multiplayer Play Mode including new features, upd
 - Added a Scenario launch pop-up window that shows the scenario stages, progress bars, and configuration details.
 - Added the Entities Hierarchy window to Virtual Players. To enable this window, go to **Layout** > **Entities Hierarchy**.
 
+## [1.3.3] - 2024-12-17
+
+### Added
+- Fixed an `ArgumentNullException` issue that occurs across an MPPM upgrade with an actively set Play Mode Scenario configuration.
+
+### Fixed
+- Fixed an issue where project settings were not getting propagated to Virtual Players when entering Play mode via the play button.
+
 ## [1.3.2] - 2024-11-14
 
 ### Fixed