message: Change slidesToScroll explanation
diff: @@ -1246,7 +1246,7 @@ embla.on('select', toggleNextButtonEnabled);
  This API method returns the index of the current selected snap point. If the
  <a href="#slidestoscroll">
  <code>slidesToScroll</code>
  - </a> option is more than <code>1</code> some slides will be grouped together and share the same index. For example, when it's set to <code>2</code>, every two slides will share the same index. In this case, slide <code>1</code> and <code>2</code> will share index <code>0</code> and slide <code>3</code> and <code>4</code> will share index <code>1</code> and so on.
  + </a> option is more than <code>1</code> some slides will be grouped together and share the same index. For example, when it's set to <code>2</code>, every two slides will share the same index. In this case, <code>index 0</code> holds <code>slide 1 and 2</code> and <code>index 1</code> holds <code> slide 3 and 4</code>.
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