Jmprieur/fix blasor server net core31 template (#499)

* Fixes the instance outside the section in template

Author: jmprieur

ProjectTemplates/templates/StarterWeb-CSharp/appsettings.json

@@ -18,6 +18,7 @@
 ////#elseif (OrganizationalAuth)
 //    "Instance": "https:////login.microsoftonline.com/",
 //  "AzureAd": {
+//    "Instance": "https:////login.microsoftonline.com/",
 //#if (MultiOrgAuth)
 //    "TenantId": "common",
 //#elseif (SingleOrgAuth)