docs: Updated README file for MACAE

[Prekshith-Microsoft]

This pull request significantly reorganizes and enhances the DeploymentGuide.md documentation to improve clarity, usability, and guidance for deploying the solution. Key improvements include restructuring deployment options, clarifying environment setup steps, adding critical warnings, and streamlining post-deployment instructions.

Major documentation improvements:

Deployment options and configuration:

• Reorganized and clarified deployment options, moving sandbox and WAF-aligned (production) deployment instructions into a dedicated "Deployment Options" section, with clear guidance on choosing and configuring each option. [1] [2]
• Added explicit steps and warnings for VM credentials configuration and emphasized the need to review parameter values for production deployments.

Environment management and redeployment:

• Introduced a critical warning and detailed instructions for creating a fresh environment when redeploying to avoid conflicts, including reasons for this requirement.

Deployment step updates and post-deployment guidance:

• Updated deployment step references and instructions for Codespaces, VS Code Dev Containers, and local environments to point to the new deployment options section. [1] [2] [3]
• Improved clarity and order of post-deployment steps, including uploading team configurations, indexing sample data, setting up authentication, accessing the application, and cleaning up resources. Added a "Next Steps" section for trying out the solution and moved clean-up instructions for resource deletion. [1] [2] [3] [4] [5]

Additional clarifications:

• Added a note explaining automatic Cosmos DB access permissions granted upon deployment.
• Included a warning about the behavior of azd init to prevent accidental overwriting of existing project files.

These changes collectively make the deployment process clearer, safer, and more accessible for users at all experience levels.## Purpose

• ...

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information