FSharp.Core WebExtensions Module uses obsolete classes

[alexanderkor]

If I get it right, the examples on FSharp.Core WebExtensions Module page use obsolete classes like WebRequest and WebClient and should be using HttpClient instead. https://fsharp.github.io/fsharp-core-docs/reference/fsharp-control-webextensions.html

[Martin521]

Unfortunately, this is not just a documentation issue.
I think the FSharp.Control.WebExtensions functions should be deprecated (as they extend a deprecated class).

Should they be replaced by new functions with similar functionality? I doubt it. These functions were beautiful for demoing async, but glossing over all the complexities of error handling. I would rather add a remark recommending the use of one of the existing HttpClient wrappers of the F# ecosystem.