fix(node-cluster): default number of workers

[hminghe]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 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)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

📝 Checklist

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

[codecov]

Codecov Report

Merging #963 (596f819) into main (b11a0c4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #963   +/-   ##
=======================================
  Coverage   67.59%   67.59%           
=======================================
  Files          59       59           
  Lines        6030     6030           
  Branches      679      679           
=======================================
  Hits         4076     4076           
  Misses       1945     1945           
  Partials        9        9           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[pi0]

Thanks!