Update README.md

Author: UnitySuperEditor

README.md

@@ -6,7 +6,7 @@
 Super Editor is a versatile Unity editor extension that includes a powerful, easy-to-use built-in IDE, Hierarchy enhancements, and Favorite enhancements，These three modules are useful tools for almost any Unity project.
 
 Free to download from 
-[Here](https://github.com/UnitySuperEditor/SuperEditor/releases/download/v1.8.0/SuperEditor1.8.0.unitypackage) or
+[Here](https://github.com/UnitySuperEditor/SuperEditor/releases/download/v1.8.1/SuperEditor1.8.1.unitypackage) or
 [Unity Asset Store](https://assetstore.unity.com/packages/tools/utilities/super-editor-190349)(Asset Store version update temporarily stopped)
 
 ## Requirement