message: Fix className attribute in React example section
  Reference
diff: @@ -118,10 +118,10 @@ export const EmblaCarousel = () => {
  <div className="embla__slide">Slide 3</div>
  </div>
  </div>
  - <button class="embla__prev" onClick={scrollPrev}>
  + <button className="embla__prev" onClick={scrollPrev}>
  Prev
  </button>
  - <button class="embla__next" onClick={scrollNext}>
  + <button className="embla__next" onClick={scrollNext}>
  Next
  </button>
  </div>
  