Math.PI values are inconsistent

[Documentation](https://docs.microsoft.com/en-us/dotnet/api/system.math.pi?redirectedfrom=MSDN&view=netcore-2.2) says at the top:
```public const double PI = 3.14159265358979;```

In the [remarks](https://docs.microsoft.com/en-us/dotnet/api/system.math.pi?redirectedfrom=MSDN&view=netcore-2.2#remarks)

> The value of this field is 3.1415926535897931.

While in the [source](https://source.dot.net/#System.Private.CoreLib/shared/System/Math.cs,a4407e67b9a5afad) it is really this value:

```public const double PI = 3.14159265358979323846;```

And just too add more to it:
```
> Console.WriteLine(((Math.PI - 3.14159265358979)) > Double.Epsilon)
True
> Console.WriteLine(((Math.PI - 3.141592653589793)) > Double.Epsilon)
False
```