Update to use new date plugin

[AErmie]

This pull request includes updates to various documentation files to improve accuracy and provide better guidance for users. The most significant changes include updating URLs, adding instructions for Windows users, and using a dynamic date for the "Last updated" field.

Documentation improvements:

• README.md: Updated URLs and added instructions for Windows users to preview content locally.
• docs/aws/design-build-and-deploy-an-application/deploy-an-app-to-the-aws-landing-zone.md: Changed the "Last updated" field to use a dynamic date.
• docs/aws/design-build-and-deploy-an-application/iam-user-service.md: Changed the "Last updated" field to use a dynamic date.
• docs/aws/design-build-and-deploy-an-application/networking.md: Changed the "Last updated" field to use a dynamic date.
• docs/aws/design-build-and-deploy-an-application/requirements-for-building-your-application.md: Changed the "Last updated" field to use a dynamic date.

[Pilargit12]

• Just one change in the Last updated: {{ git_revision_date_localized }}

[Pilargit12]

🚀 Let's go! Thank you Adin!