## Description
Repo `--prefix` values should be normalized with a trailing `/`
## Type of change
<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor
## Issue(s)
* Fixes#1152
## Test Plan
<!-- How will this be tested prior to merging.-->
- [] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E