fix: Invalid framework target

Author: Kiruyuto

ProjectTemplates/templates/NetCord.GenericHost/NetCord.Template.Bot.csproj

@@ -1,7 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
     <PropertyGroup>
-        <TargetFramework>.net8.0</TargetFramework>
+<!--#if (framework == "net9.0") -->
+        <TargetFramework>net8.0</TargetFramework>
+<!--#else -->
+        <TargetFramework>net9.0</TargetFramework>
+<!--#endif -->
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
     </PropertyGroup>