remove standard keyword (#49700)

Author: Varorbc

src/ProjectTemplates/Web.ProjectTemplates/content/RazorClassLibrary-CSharp/.template.config/template.json

@@ -8,7 +8,7 @@
   ],
   "name": "Razor Class Library",
   "generatorVersions": "[1.0.0.0-*)",
-  "description": "A project for creating a Razor class library that targets .NET Standard",
+  "description": "A project for creating a Razor class library that targets .NET",
   "groupIdentity": "Microsoft.Web.Razor",
   "precedence": "9800",
   "identity": "Microsoft.Web.Razor.Library.CSharp.8.0",