Update tutorial.md

[bovandersteene]

Description

First open folder then remove the .git file

Fixes # (issue)

Type of Change

Please delete options that are not relevant.

• [x ] This change requires a documentation update

Checklist: (Feel free to delete this section upon completion)

• My code follows the style guidelines of this project (I have run yarn prettier-fix && yarn lint)
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes (I have run yarn test)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have updated type definitions in index.d.ts for any breaking API changes

[ebrillhart]

Thanks @bovandersteene!