chore: fix terraform docs behavior

[d-costa]

what

• Remove version from docker run tf docs suggestion
• Set lockfile: false in terraform-docs settings

why

• When running the suggested command to locally generate docs, there is a difference in behavior between local and remote (gh action) results, since locally it has access to the terraform lockfile.
• Since we do not commit the lockfile, it has no effect in gh workflows

references

• Inconsitancy with Provider version between github-action/terraform-docs terraform-docs/gh-actions#98

[bschaatsbergen]

LGTM 🚀