Update UnityEditor-DarkMode pkg

Assets/Plugins/UnityEditorDarkMode/README.txt

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+DarkMode Mod for Unity Editor on Windows
+----------------------------------------------------------------------------
+v1.1 04/08/2024
+----------------------------------------------------------------------------
+
+A fully working runtime dark mode mod for Unity Editor on Windows with:
+
+  - Dark title bar
+  - Dark menu bar
+  - Dark context menu
+  - And more...
+
+> This runtime mod works on Windows 11 and Windows 10 1903+.
+  Tested on Unity 2019, 2020, 2021, 2022, 2023 and Unity 6.
+
+Source code is available at: https://github.com/0x7c13/UnityEditor-DarkMode
+
+----------------------------------------------------------------------------
+
+MIT License
+
+Copyright (c) 2024 Jiaqi (0x7c13) Liu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.