Sample code on Github does not match the tutorial code

I am trying to follow the tutorial and wanted to peek at the finished code to make sure I put the IEnumerable Suits() in the right place. It was unclear to me if it should be inside the public class Program or not. But when I went to the sample code, I found it does not look at all like the tutorial. Instead of the IEnumerable type, I see enum types used.

Sample code location:

Code I expected to see:
```csharp
static IEnumerable Suits()
{
yield return "clubs";
yield return "diamonds";
yield return "hearts";
yield return "spades";
}
```

Code I found in the sample source code Github repository (`Program.cs`):
```csharp
public enum Suit
{
Clubs,
Diamonds,
Hearts,
Spades
}
```
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#### Document Details

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* ID: 5a2b7453-076c-a18e-f999-cbd57ab13e60
* Version Independent ID: b687ed5b-5013-cceb-01e5-77f9cc7bb534
* Content: [Working with LINQ](https://docs.microsoft.com/en-us/dotnet/csharp/tutorials/working-with-linq)
* Content Source: [docs/csharp/tutorials/working-with-linq.md](https://github.com/dotnet/docs/blob/main/docs/csharp/tutorials/working-with-linq.md)
* Product: **dotnet-csharp**
* Technology: **csharp-linq**
* GitHub Login: @BillWagner
* Microsoft Alias: **wiwagn**

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[Associated WorkItem - 476422](https://dev.azure.com/msft-skilling/Content/_workitems/edit/476422)