remove colon (:) from folder names that cause issues during clone (Windows)

[brgsstm]

The inclusion of a colon in folder name "Azure Firewall/Template - Private IP Dnat with 2 Scenarios: Overlapped Network and Non-Routable Network" causes issues when cloning this repository on Windows.

error: invalid path 'Azure Firewall/Template - Private IP Dnat with 2 Scenarios: Overlapped Network and Non-Routable Network/PrivateIpDnatArmTemplateV2.json'
error: invalid path 'Azure Firewall/Template - Private IP Dnat with 2 Scenarios: Overlapped Network and Non-Routable Network/readme.md'
error: invalid path 'Azure Firewall/Template - Private IP Dnat with 2 Scenarios: Overlapped Network and Non-Routable Network/win-vm-2.ps1'
error: invalid path 'Azure Firewall/Template - Private IP Dnat with 2 Scenarios: Overlapped Network and Non-Routable Network/win-vm-3.ps1'

[github-actions]

Message that will be displayed on users' first pull request

[shabaz-github]

The colon has been removed - thank you for letting us know - Closing this PR without merge.