remove empty line in RUN command

[rawpixel-vincent]

to clear docker warning after build

Pull Request Type

• [ ] ✨ feat
• [x] 🐛 fix
• [ ] ♻️ refactor
• [ ] 💄 style
• [x] 🔨 chore
• [ ] 📝 docs

What is in this change?

just silencing a docker build warning

Developer Validations

• [x] I ran yarn lint from the root of the repo & committed changes
• [x] Relevant documentation has been updated
• [x] I have tested my code functionality
• [x] Docker build succeeds locally