Docs/ssr readme fixes

[spmonahan]

Pull Request

📖 Description

Fixes some typos in the SSR README. Nothing major, just a little friction to getting things working :)

✅ Checklist

General

• [x] I have included a change request file using $ yarn change
• [ ] I have added tests for my changes.
• [ ] I have tested my changes.
• [x] I have updated the project documentation to reflect my changes.
• [x] I have read the CONTRIBUTING documentation and followed the standards for this project.