message: docs: add in-page nav, change title to match left nav better
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diff: -<h1 class="no-toc">CLI Command Reference</h1>
  +# CLI Overview and Command Reference
  The Angular CLI is a command-line interface tool that you use to initialize, develop, scaffold, and maintain Angular applications. You can use the tool directly in a command shell, or indirectly through an interactive UI such as [Angular Console](https://angularconsole.com).
  