message: build: fix link to DEVELOPER.md in `check-environment.js`
diff: @@ -38,7 +38,7 @@ if (issues.length) {
  console.error(
  'Your environment doesn\'t provide the prerequisite dependencies.\n' +
  'Please fix the issues listed above and then rerun the gulp command.\n' +
  - 'Check out https://github.com/angular/angular/blob/master/DEVELOPER.md for more info.');
  + 'Check out https://github.com/angular/angular/blob/master/docs/DEVELOPER.md for more info.');
  process.exit(1);
  }
  