docs(node): fix typo

[iiio2]

🔗 Linked issue

❓ Type of change

• 📖 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

the correct spelling will be multi-core or multicore

https://en.wikipedia.org/wiki/Multi-core_processor
https://www.techtarget.com/searchdatacenter/definition/multi-core-processor

📝 Checklist

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

[pi0]

thnx