fix naming typo in cli help

[syphernl]

This is a 🧐 documentation change.

• I've added tests (if it's a bug, feature or enhancement)
• I've adjusted the documentation (if it's a feature or enhancement)
• The test suite passes (run bundle exec rspec to verify this)

Summary

I found a minor typo (the name of this tool was misspelled).
I've also found a few of these in the documentation for which I've opened boltops-tools/terraspace-docs#20.