[BUG] Change URL's in .env.example

[n1colasf]

Bug Description

When creating a new project with cogsol-admin startproject, the generated .env.example file does not append the required endpoint paths to the base URLs.
Specifically, /cognitive and /content are not automatically added to the corresponding API base URLs, which leads to incorrect default configuration.

To Reproduce

Steps to reproduce the behavior:

1. Run command cogsol-admin startproject my_project
2. Open the generated .env.example file
3. Observe the values of COGSOL_API_BASE and COGSOL_CONTENT_API_BASE

Expected Behavior

The generated .env.example should automatically include the required endpoint paths:

COGSOL_API_BASE should end with /cognitive
COGSOL_CONTENT_API_BASE should end with /content

Actual Behavior

The generated .env.example file contains only the base URLs without the required paths:

COGSOL_API_BASE=http://localhost:8000
COGSOL_CONTENT_API_BASE=http://localhost:8001

Error Output

No runtime error is thrown, but API requests fail or point to incorrect endpoints due to missing paths.

Environment

• OS: Ubuntu 22.04
• Python version: 3.11.x
• CogSol version: 0.2.0 (alpha)

Additional Context

The issue originates from the project template generator, where the .env.example content is hardcoded without appending /cognitive and /content to their respective base URLs.
Automatically generating the correct defaults would improve developer experience and reduce setup errors.