Normalize property text (#273)

Author: msJinLei

src/Authentication.Abstractions/AzureSubscription.cs

@@ -103,8 +103,8 @@ public static class Property
             Environment = "Environment",
             Account = "Account",
             SubscriptionPolices = "SubscriptionPolices",
-            AuthorizationSource = "authorizationSource",
-            Tags = "tags";
+            AuthorizationSource = "AuthorizationSource",
+            Tags = "Tags";
         }
     }
 }

src/Authentication.Abstractions/AzureTenant.cs

@@ -48,13 +48,13 @@ public class AzureTenant : IAzureTenant
         public static class Property
         {
             public const string TenantCategory = "TenantCategory",
-                Country = "country",
+                Country = "Country",
                 CountryCode = "CountryCode",
                 DisplayName = "DisplayName",
                 Domains = "Domains",
-                DefaultDomain = "defaultDomain",
-                TenantType = "tenantType",
-                TenantBrandingLogoUrl = "tenantBrandingLogoUrl",
+                DefaultDomain = "DefaultDomain",
+                TenantType = "TenantType",
+                TenantBrandingLogoUrl = "TenantBrandingLogoUrl",
                 Directory = "Directory";
         }
     }