Update README.md

Author: VirtueSky

README.md

@@ -27,9 +27,9 @@ for version `1.0.2`
 ```csharp
 "com.wolf-package.in-app-purchasing":"https://github.com/wolf-package/in-app-purchasing-unity.git#1.0.2",
 ```
-dependency `extensions-unity-1.0.1`
+dependency `extensions-unity-1.0.3`
 ```csharp
-"com.wolf-package.extensions":"https://github.com/wolf-package/extensions-unity.git#1.0.1",
+"com.wolf-package.extensions":"https://github.com/wolf-package/extensions-unity.git#1.0.3",
 ```
 
 ## Use