message: docs: remove surplus curly brace
diff: @@ -12,7 +12,7 @@ export default `function Test() {
  {/* important: using id from to track item added or removed */}
  <div key={field.id}>
  {/* register with empty validation make sure pass empty object */}
  - <input name={\`test[\${index}}]\`} ref={register()} />
  + <input name={\`test[\${index}]\`} ref={register()} />
  </div>
  ))}
  );
  