[BBT-95] Repo name incorrect in README.

[spbuckle]

Description

BBT-95 - This repo name was incorrect in the README meaning the setup instructions can't be followed. I've changed it to the correct repo name.

Change Log

• Repo name corrected in README.

Steps to test

• Check the readme for correct repo name.
• Attempt to clone using instructions.
• Attempt to pull down plugin using composer.

Screenshots/Videos

Terminal output when using current instructions:
https://app.warp.dev/block/gF0lk1uYWayMnwLm7iPqNZ

Terminal output when using new instructions:
https://app.warp.dev/block/hKDS9qrSQrsJAntQmeCCV5

Checklist:

• My code follows the style guidelines of this project
• 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