[dev-v5] Update installation instructions to include --prerelease flag and specify version for MCP Server

[AClerbois]

Pull Request

📖 Description

This pull request updates the MCP server installation documentation to clarify usage of prerelease versions and to provide more explicit guidance on specifying versions. It also adds a reference to the official NuGet page for further information. These changes help users install the correct versions, especially prerelease builds, and find more details about the package.

Documentation updates for prerelease and versioning:

• Updated installation and update commands to include the --prerelease flag, ensuring users can install and update to prerelease versions of Microsoft.FluentUI.AspNetCore.McpServer. [1] [2]
• Clarified how to specify a particular prerelease version, using the first RC version as an example in both command-line and configuration file examples. [1] [2]

Additional resources:

• Added a section linking to the official NuGet.org page for Microsoft.FluentUI.AspNetCore.McpServer, providing users with a resource to browse all available versions and installation methods.

✅ Checklist

General

• I have added tests for my changes.
• I have tested my changes.
• I have updated the project documentation to reflect my changes.
• I have read the CONTRIBUTING documentation and followed the standards for this project.

Component-specific

• I have added a new component
• I have added Unit Tests for my new component
• I have modified an existing component
• I have validated the Unit Tests for an existing component

[Copilot]

Pull request overview

Updates the MCP Server installation documentation in the Fluent UI Blazor demo docs to better address installing/updating prerelease builds and pinning a specific prerelease version, and adds a NuGet.org reference link for version discovery.

Changes:

• Adds --prerelease to the global tool install and update commands for Microsoft.FluentUI.AspNetCore.McpServer.
• Updates the “Specifying a Version” examples to demonstrate pinning a prerelease RC version for dnx usage and config.
• Adds a “NuGet Package” section linking to the official NuGet.org package page.

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