docs: typo fix in README

[JessicaSachs]

🔗 Linked issue / Discussion

I didn't make an issue for the typo change - let me know if you need it?

❓ Type of change

• [x] 📖 Documentation (updates to the documentation, readme or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Saw a typo in the main description of the VSCode extension. I wasn't sure if "Startes" was a real word or a typo (so I looked it up and then submitted this PR).

I found one other typo in the JSDocs.

📝 Checklist

• [ ] I have linked an issue or discussion.
• [x] I have updated the documentation accordingly.