title: vscode live Server port settings not work, and always open in localhost:8081
body: <p>here is my live Server settings json</p>
  
  <pre><code>{
      "editor.fontSize": 18,
      "workbench.iconTheme": "vscode-icons",
      "files.autoSave": "onFocusChange",
      "terminal.integrated.shell.windows": "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe",
      "explorer.confirmDelete": false,
      "editor.tabCompletion": "on",
      "editor.tabSize": 2,
      "vetur.format.options.useTabs": true,
      "editor.detectIndentation": false,
      "git.autofetch": false,
      "liveServer.settings.host": "localhost",
      "liveServer.settings.port": 0,
  
  }
  </code></pre>
  
  <p>I try to reinstall live Server and close the windows firewall, but it still not work.</p>
  
  <p>It drives me mad!</p>