.NET 10 P6 - FSharp (#9946)

* Update fsharp preview6 release notes with manual changes.

* udpate for release

Author: jamesmontemagno

release-notes/10.0/preview/preview6/fsharp.md

@@ -1,21 +1,3 @@
 # F# updates in .NET 10 Preview 6 - Release Notes
 
-Here's a summary of what's new in F# in this preview release:
-
-- [F# Language](#f-language)
-- [FSharp.Core standard library](#fsharpcore-standard-library)
-- [FSharp.Compiler.Service](#fsharpcompilerservice)
-
-> Note: Release notes for F# are generated for all contributions to the [dotnet/fsharp](https://github.com/dotnet/fsharp) repository and split across language, library and compiler changes.
-
-## F# Language
-
-[Release notes for new F# language features](https://fsharp.github.io/fsharp-compiler-docs/release-notes/Language.html) list language changes that have to be enabled by `<LangVersion>preview</LangVersion>` project property in `.fsproj` project file. They will become the default with .NET 10 release.
-
-## FSharp.Core Standard Library
-
-[Changes to the FSharp.Core standard library](https://fsharp.github.io/fsharp-compiler-docs/release-notes/FSharp.Core.html) are applied automatically to projects compiled with new SDK, unless they pin down a lower FSharp.Core version.
-
-## FSharp.Compiler.Service
-
-General improvements and bugfixes in the compiler implementation are at [Release notes for FSharp.Compiler.Service](https://fsharp.github.io/fsharp-compiler-docs/release-notes/FSharp.Compiler.Service.html).
+This preview release does not contain new F# features. View the [What's new in F#](https://fsharp.github.io/fsharp-compiler-docs/release-notes/Language.html) documentation to learn more.