docs: tutorials: rolling alice: coach alice: our open source guide: Fix lack of change directory before deleting local copy of demo repo

Author: pdxjohnny

docs/tutorials/rolling_alice/0001_coach_alice/0002_our_open_source_guide.md

@@ -45,6 +45,7 @@ $ echo 'print("Hello World")' > test.py
 $ git add test.py
 $ git commit -sam 'Initial Commit'
 $ git push --set-upstream origin main
+$ cd ..
 $ rm -rf my-new-python-project
 ```