message: fix: add toc tag to readme command description
diff: @@ -23,6 +23,8 @@ The readme must have any of the following tags inside of it for it to be replace
  <!-- usage -->
  # Commands
  <!-- commands -->
  +# Table of contents
  +<!-- toc -->
  Customize the code URL prefix by setting oclif.repositoryPrefix in package.json.
  `
  