Last example in Enumeration extension methods article is missing some output

### Type of issue

Missing information

### Description

The last example in the article (see below) is missing some output. The line `Console.WriteLine($"\r\nRaising the bar. Passing grade is now {Grades.MinimumPassingGrade}!\r\n");` should print "Raising the bar. **Passing grade is now C!**"
```
Grades g1 = Grades.D;
Grades g2 = Grades.F;
Console.WriteLine($"First {(g1.Passing ? "is" : "is not")} a passing grade.");
Console.WriteLine($"Second {(g2.Passing ? "is" : "is not")} a passing grade.");

Grades.MinimumPassingGrade = Grades.C;
Console.WriteLine($"\r\nRaising the bar. Passing grade is now {Grades.MinimumPassingGrade}!\r\n");
Console.WriteLine($"First {(g1.Passing ? "is" : "is not")} a passing grade.");
Console.WriteLine($"Second {(g2.Passing ? "is" : "is not")} a passing grade.");
/* Output:
First is a passing grade.
Second is not a passing grade.

Raising the bar!

First is not a passing grade.
Second is not a passing grade.
*/
```

### Page URL

https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/how-to-create-a-new-method-for-an-enumeration

### Content source URL

https://github.com/dotnet/docs/blob/main/docs/csharp/programming-guide/classes-and-structs/how-to-create-a-new-method-for-an-enumeration.md

### Document Version Independent Id

c91f6ad0-fbf0-c8b8-bafb-2083073d8ebf

### Platform Id

b4ea3161-597b-f2d8-cd24-b6bd2a87a7f7

### Article author

@BillWagner

### Metadata

* ID: 190b80d1-86d2-1640-da1a-72c45fa529a4
* PlatformId: b4ea3161-597b-f2d8-cd24-b6bd2a87a7f7
* Service: **dotnet-csharp**
* Sub-service: **fundamentals**

[Related Issues](https://github.com/dotnet/docs/issues?q=is%3Aissue+is%3Aopen+c91f6ad0-fbf0-c8b8-bafb-2083073d8ebf)