message: remove tslint in the recommendation. add ESLint to it.
diff: // for the documentation about the extensions.json format
  "recommendations": [
  // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
  - "ms-vscode.vscode-typescript-tslint-plugin"
  + "dbaeumer.vscode-eslint"
  ]
  }
  