docs: update dots.md (#678)

Author: LeorentKelmendi

docs/examples/dots.md

@@ -1,7 +1,7 @@
 ## Dots
 Dots are a separate component which you can use with controlled carousel as well.
 ```jsx render
-// import Carousel from '@brainhubeu/react-carousel';
+// import Carousel, { Dots } from '@brainhubeu/react-carousel';
 // import '@brainhubeu/react-carousel/lib/style.css';
 
 class MyCarousel extends React.Component {