[Combobox] Autocomplete (#4386)

* autocomplete

* update2

---------

Co-authored-by: Kritvi <158570656+Kritvi-bhatia17@users.noreply.github.com>

src/pages/components/dropdown/usage.mdx

@@ -826,11 +826,11 @@ boxes are useful when the data populating the list may come from a database.
 </Column>
 </Row>
 
-- The menu opens by clicking anywhere in the field and you can start typing to
-  sort through the list of options. The option that best matches the typed
-  characters is highlighted.
-- After typing text in the field, the close (x) icon appears to the right of the
-  text in the field. This clears any text that’s been entered in the field.
+- The menu opens by clicking anywhere in the field, allowing users to type and
+  sort through the list of options. The best-matching option is highlighted as
+  users type.
+- A close (x) icon clears the input, and autocomplete refines options as users
+  type.
 
 <Row>
 <Column colLg={8}>