Update README.md

Author: CodeDead

README.md

@@ -9,7 +9,7 @@ https://codedead.com/
 
 # Requirements for building
 * [Syncfusion for WPF](https://www.syncfusion.com/)
-* [.NET Framework 4.7](https://www.microsoft.com/en-us/download/details.aspx?id=55167)
+* [.NET Framework 4.7.1](https://www.microsoft.com/en-us/download/details.aspx?id=56116)
 * [Visual Studio](http://visualstudio.com)
 * Turn off 'Prefer 32-bit'
 * [UpdateManager](https://github.com/CodeDead/UpdateManager)