fix secrets value access example

Author: raksiv

docs/reference/csharp/secrets/secret-version-access.mdx

@@ -14,7 +14,7 @@ var keyRef = Application.Secret("apikey").Allow(SecretPermission.Access);
 
 var keyValue = keyRef.Latest().Access();
 
-keyValue.ValueText;
+keyValue.Value;
 
 Application.Run();
 ```
@@ -31,7 +31,7 @@ var keyRef = Application.Secret("apikey").Allow(SecretPermission.Access);
 
 var keyValue = keyRef.Latest().Access();
 
-keyValue.ValueText;
+keyValue.Value;
 
 Application.Run();
 ```
@@ -46,7 +46,7 @@ var keyRef = Application.Secret("apikey").Allow(SecretPermission.Access);
 
 var keyValue = keyRef.Version("the-version-id").Access();
 
-keyValue.ValueText;
+keyValue.Value;
 
 Application.Run();
 ```

docs/reference/csharp/secrets/secret-version.mdx

@@ -50,7 +50,7 @@ var keyRef = Application.Secret("encryptionKey").With(SecretPermission.Accessing
 
 var keyVersionRef = keyRef.Version("the-version-id").Access();
 
-var keyValue = keyVersionRef.ValueText;
+var keyValue = keyVersionRef.Value;
 
 Application.Run();
 ```