message: Update microsite/scripts/verify-sidebars.js
diff: @@ -37,7 +37,7 @@ for (let id of ids) {
  }
  if (previous && !ids.includes(previous)) {
  - errors.push(`Previous ${previous} does not exists in ${id}.`);
  + errors.push(`Previous ${previous} does not exist in ${id}.`);
  }
  }
  