Fix python commands in 03-GettingStarted/07-aitk

[kakakakakku]

Purpose

Describe the intention of the changes being proposed. What problem does it solve or functionality does it add?

Hi😀 Thanks for the useful tutorial!
The purpose of this change is to fix wrong python commands in the 03-GettingStarted/07-aitk section.

See inline comments.
Thank you👍

Does this introduce a breaking change?

When developers merge from main and run the server, azd up, or azd deploy, will this produce an error?
If you're not sure, try it out on an old environment.

[ ] Yes
[x] No

Does this require changes to learn.microsoft.com docs or modules?

which includes deployment, settings and usage instructions.

[ ] Yes
[x] No

Type of change

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[x] Documentation content changes
[ ] Other... Please describe:

[Copilot]

Pull Request Overview

This PR fixes the Python setup commands in the 03-GettingStarted/07-aitk tutorial by correcting the virtual environment activation path on macOS/Linux and properly quoting the pip extras install.

• Update macOS/Linux venv activation to use .venv folder
• Quote the extras specifier in pip install -e '.[dev]'

[kakakakakku]

note: I get the following error in my macOS.

$ pip install -e .[dev]
zsh: no matches found: .[dev]

[aprilgittens]

Thanks for the feedback! I'm going to validate and will follow up once complete.