PR Summary

In #13205 -InputFormat shorthand switch -ip was changed to -inp.
This PR updates the parameter description in pwsh help.

PR Context

PR Checklist

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• Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
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    • Impact on PowerShell Editor Services which is used in the PowerShell extension for VSCode (which runs in a different PS Host).
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    • Impact on PSScriptAnalyzer (which provides linting & formatting in the editor extensions).
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