`flat` skeleton `readme.md` incorrectly references `lib/` directory (belongs to `modern` skeleton)

[edyionescu]

What are the steps to reproduce this issue?

1. Create a new ColdBox app using the flat skeleton: coldbox create app name=myApp skeleton=flat
2. Open the generated readme.md in the project root
3. Search for references to lib/

What happens?

The generated readme.md contains multiple references to a lib/ directory that doesn't exist in the flat skeleton. The flat skeleton installs coldbox and testbox directly into the webroot, not into a lib/ subfolder.

Incorrect references appear in these places:

### Key Directories
...
- **`lib/`** - Third-party frameworks installed by CommandBox

```bash
box install
...

This command reads `box.json` and installs:
- **ColdBox** framework to `lib/coldbox/`
- **TestBox** testing framework to `lib/testbox/`

├── 📂 lib/                    # Framework libraries
│   ├── coldbox/               # ColdBox framework
│   └── testbox/               # TestBox testing framework

Any logs, error output, etc?

This caused Gemini 2.5 to give wrong advice when asked about the project structure:

It seems there's a slight misunderstanding regarding the exact location of the coldbox framework files within your project. According to the readme.md file in your project, the ColdBox framework is installed into the lib/coldbox/ directory, not directly in the project root.

What versions are you using?

Operating System: Windows 11 Pro 25H2
Package Version: 8.12.0+30