Improve deployment script documentation. (#9916)

Fixes #9832

Context
Updating documentation concerning using the deployment PowerShell script on Linux.

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Co-authored-by: Roman Konecny <rokonecn@microsoft.com>

documentation/Deploy-MSBuild.md

@@ -22,3 +22,7 @@ If you cannot build or cannot deploy MSBuild on the same machine on which you wi
 ## .NET (Core) SDK
 
 Deploy-MSBuild can also patch a .NET (Core) SDK installation. Pass the `-runtime Core` argument to `Deploy-MSBuild.ps1` to ensure that it selects .NET Core MSBuild.
+
+### Linux
+
+There isn’t a shell script for deploying MSBuild. Instead, you’ll need to [install the PowerShell tool](https://learn.microsoft.com/powershell/scripting/install/installing-powershell-on-linux) and execute `Deploy-MSBuild.ps1` using the tool on Unix platforms with the command: `pwsh scripts\Deploy-MSBuild.ps1`.

documentation/wiki/MSBuild-Resources.md

@@ -12,7 +12,10 @@
    * find targets [referencesource.microsoft.com/#MSBuildTarget=ResolveAssemblyReferences](https://referencesource.microsoft.com/#MSBuildTarget=ResolveAssemblyReferences)
 
 # Tools
-**Note:** These are third party tools
+ * [PowerShell](https://learn.microsoft.com/powershell/scripting/overview)
+   * Allows to execute powershell scripts in Windows, Linux, and macOS.
+
+Third-party tools:
  * [MSBuildStructuredLog](https://msbuildlog.com/)
    * A log viewer that displays a structured representation of executed targets, tasks, property and item values.
  * [MSBuildExtensionPack](https://github.com/mikefourie-zz/MSBuildExtensionPack) (also via [NuGet](https://www.nuget.org/packages/MSBuild.Extension.Pack))