chore: Update README.md

Author: andrewbabbittdev

README.md

@@ -10,7 +10,7 @@ Blazor Desktop allows you to create desktop apps using Blazor. Apps run inside o
 The easiest way to get started with Blazor Desktop is to install the templates, you can do so using the dotnet cli as follows:
 
 ```powershell
-dotnet new install BlazorDesktop.Templates::8.0.0
+dotnet new install BlazorDesktop.Templates::9.0.0
 ```
 
 Once you have the templates installed, you can either create a new project from the template either in Visual Studio in the template picker: