Merge pull request #9 from richzw/richzw-patch-2

Update README.md

Author: richzw

README.md

@@ -223,7 +223,7 @@ func main() {
 
 # Support
 
-App Store Server API [1.9+](https://developer.apple.com/documentation/appstoreserverapi)
+App Store Server API [1.11+](https://developer.apple.com/documentation/appstoreserverapi)
 
 # License