Add F#-friendly alternative suggestion to Azure Blob Storage documentation (#48666)

* Initial plan

* Add F#-friendly alternative suggestion for Azure Blob Storage

Co-authored-by: BillWagner <493969+BillWagner@users.noreply.github.com>

* Convert F#-friendly alternatives section to NOTE style alert

Co-authored-by: BillWagner <493969+BillWagner@users.noreply.github.com>

* Apply suggestion from @BillWagner

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: BillWagner <493969+BillWagner@users.noreply.github.com>
Co-authored-by: Bill Wagner <wiwagn@microsoft.com>

Author: Copilot

docs/fsharp/using-fsharp-on-azure/blob-storage.md

@@ -13,6 +13,9 @@ This article shows you how to perform common tasks using Blob storage. The sampl
 
 For a conceptual overview of blob storage, see [the .NET guide for blob storage](/azure/storage/blobs/storage-quickstart-blobs-dotnet). For ease, these tutorials use [connection strings](/azure/storage/storage-configure-connection-string) to authenticate with Azure. For optimal security, you should use Microsoft Entra ID with [managed identities](/entra/identity/managed-identities-azure-resources/).
 
+> [!NOTE]
+> This article uses the standard Azure Storage Client Library for .NET. F# developers might consider the [FSharp.Azure.Blob](https://github.com/random82/FSharp.Azure.Blob) library, which provides a more idiomatic F# API for working with Azure Blob Storage. This community library offers idiomatic F# functions and patterns that make blob operations more natural in F#.
+
 ## Prerequisites
 
 To use this guide, you must first [create an Azure storage account](/azure/storage/common/storage-account-create). You also need your storage access key for this account.