docs: update ref documentation (#1013)

* docs: update ref documentation

* Update docs/api.mdx

Co-authored-by: Fritz <4413963+fritz-c@users.noreply.github.com>

---------

Co-authored-by: Fritz <4413963+fritz-c@users.noreply.github.com>

Author: Pieter Bogaerts

docs/api.mdx

@@ -96,11 +96,6 @@ ___
 ### `frameAriaLabel`
 A `string` for the aria-label of the frame container of the carousel. This is useful when you have more than one carousel on the page. The default value is an empty string.
 
-___
-
-### `innerRef`
-A React ref object `MutableRefObject<HTMLDivElement>` for carousel element.
-
 ---
 
 ### `keyCodeConfig`
@@ -136,6 +131,11 @@ ___
 ### `onUserNavigation`
 A function `(props: Pick<CarouselState, 'currentSlide' | 'count'>) => string` to render the message in the ARIA live region that is announcing the current slide on slide change.
 
+___
+
+### `ref`
+A React ref object `MutableRefObject<HTMLDivElement | null>` for carousel element.
+
 ---
 
 ### `renderTopLeftControls`