Windows set up - typo in Google Cloud Platform tutorial

[Yanka13]

👉 Open an Ubuntu terminal and run the following commands

🚨 replace GITHUB_NICKNAME by your GitHub nickname

cd ~/code/GITHUB_NICKNAME
ls -la

If the command does not show the data-challenges and dotfiles directories, ask for a TA 🙏

Otherwise, you can proceed with the setup:

Issue => At this point of the set-up, students don't have forked/clone the data-challenges repository yet, it is done afterward in the Kitt instruction.

[gmanchon]

Thanks for reporting @Yanka13 🙏 , I am closing the issue which it is addressed by #160.