typing errors fixed

[barkhaaroraa]

Related Issue

Closes #86

Description

changed the clone code snippet and i found a typing error in the cd paperbrain snippet aswell so I've fixed that too

Screenshots

(made changes to the cd paperbrain code)

Checklist

• [x] My code adheres to the established style guidelines of the project.
• [x] I have included comments in areas that may be difficult to understand.
• [x] Changes done by me have not introduced any new warnings.
• [x] I have conducted a self-review of my code.