Update README.md

Author: SimplyCorey

README.md

@@ -9,7 +9,7 @@ Simple QrCode
 
 ## [Español](https://www.simplesoftware.io/#/docs/simple-qrcode/es) | [Français](https://www.simplesoftware.io/#/docs/simple-qrcode/fr) | [Italiano](https://www.simplesoftware.io/#/docs/simple-qrcode/it) | [Português](https://www.simplesoftware.io/#/docs/simple-qrcode/pt-br) | [Русский](https://www.simplesoftware.io/#/docs/simple-qrcode/ru) | [日本語](https://www.simplesoftware.io/#/docs/simple-qrcode/ja) | [한국어](https://www.simplesoftware.io/#/docs/simple-qrcode/kr) | [हिंदी](https://www.simplesoftware.io/#/docs/simple-qrcode/hi) | [简体中文](https://www.simplesoftware.io/#/docs/simple-qrcode/zh-cn)
 
-Language files are currently out of date.  We need volunteers to upgrade them to v3!  Please submit a PR request!
+Language files are currently out of date.  We need volunteers to upgrade them to v4!  Please submit a PR request!
 
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