docs(readme): update readme

Author: cg33

README.md

@@ -31,16 +31,6 @@
     Inspired by <a href="https://github.com/z-song/laravel-admin" target="_blank">laravel-admin</a>
 </p>
 
-## How to use this fork
-Add this to your `go.mod`
-```
-replace github.com/GoAdminGroup/go-admin v1.2.17 => github.com/phanletrunghieu/go-admin v1.2.17+0.0.1
-```
-
-## Changes in this fork
-
-- Correct error title when call an ajax [PR-344](https://github.com/GoAdminGroup/go-admin/pull/344)
-
 ## Preface
 
 GoAdmin is a toolkit to help you build a data visualization admin panel for your golang app.