(#1243) Expand CCM initialisms for clarity

[imm0rtalsupp0rt]

Description Of Changes

This commit expands the initialisms from CCM to Chocolatey Central Management in the tabs for the Organizational Guide Client Setup.

Motivation and Context

We're finishing up the new organizational guide in preparation of replacing the old one permanently.

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

N/A

Fixes #1243