Docs: Compilation chokes on nowarn

[bartelink]

Description

https://github.com/fsprojects/FSharpPlus/blob/master/src/FSharpPlus.Docs/Samples/Collections.fsx#L80 has a #nowarn that triggers an error in dotnet/fsharp#19785 (comment) that @gusty says can be converted to ;;

Known Workarounds

N/A

Expected behavior

Docs compiles in context of FSharp.Core regression test

Actual behavior

D:\a_work\1\TestRepo\src\FSharpPlus.Docs\Samples\Collections.fsx(80,1): error FS3875: Warn directives must have warning number(s) as argument(s) [D:\a_work\1\TestRepo\src\FSharpPlus.Docs\FSharpPlus.Docs.fsproj]

Configuration

No response

Reproduction Steps

No response

Are you willing to help with a pull-request?

No

[bartelink]

@wallymathieu thanks for merging the other PR - would be great to get this one resolved too (i.e. if this can happen on master then I can point FSharp.Core's regression test config at latest)