(#1074) Add docs for Expand-ChocolateyArchive

[vexx32]

Description Of Changes

• Add docs page for Expand-ChocolateyArchive
• Remove old docs page for Get-ChocolateyUnzip

Motivation and Context

#1074

Testing

• I have previewed these changes using the Docker Container or another method before submitting this pull request.

Change Types Made

• Minor documentation fix (typos etc.).
• Major documentation change (refactoring, reformatting or adding documentation to existing page).
• New documentation page added.
• The change I have made should have a video added, and I have raised an issue for this.
  • Issue #

Change Checklist

• Requires a change to menu structure (top or left-hand side)/
• Menu structure has been updated
• Images added to the img repository?
  • PR -

Related Issue

chocolatey/choco#3797

Fixes #1074