Update roadmap.md (#9198)

Correct F# link

roadmap.md

@@ -5,7 +5,7 @@
 * [ASP.NET Core](https://github.com/dotnet/aspnetcore/issues/51834)
 * [C#](https://github.com/dotnet/roslyn/blob/main/docs/Language%20Feature%20Status.md#working-set)
 * [Entity Framework Core](https://learn.microsoft.com/ef/core/what-is-new/ef-core-9.0/plan)
-* [F#](https://github.com/fsharp/fslang-design)
+* [F#](https://github.com/orgs/dotnet/projects/126/views/40?query=is%3Aopen+sort%3Aupdated-desc)
 * [ML.NET](https://github.com/dotnet/machinelearning/blob/main/ROADMAP.md)
 * [NuGet](https://github.com/NuGet/Home/issues/13143)
 * [Roslyn](https://github.com/dotnet/roslyn/blob/main/docs/Language%20Feature%20Status.md)