title: Cannot disable angular cli warning
body: <p>I cannot disable this warning in Visual studio code</p>
  
  <blockquote>
    <p>Your global Angular CLI version (6.0.7) is greater than your local
    version (1.7.4). The local Angular CLI version is used.</p>
    
    <p>To disable this warning use "ng config -g cli.warnings.versionMismatch
    false"</p>
  </blockquote>
  
  <p>whenever I type this "ng config", it returns this error</p>
  
  <blockquote>
    <p>The specified command config is invalid. For available options, see
    <code>ng help</code>.</p>
  </blockquote>
  
  <p>please help thanks.</p>