message: docs: add _activeStep to pseudo section
diff: @@ -489,6 +489,7 @@ import { Button } from "@chakra-ui/react"
  | `_notLast` | `:not(:last-of-type)` | none |
  | `_visited` | `:visited` | none |
  | `_activeLink` | `[aria-current=page]` | none |
  +| `_activeStep` | `[aria-current=step]` | none |
  | `_indeterminate` | `:indeterminate`,<br/>`[aria-checked=mixed]`,<br/>`[data-indeterminate]` | none |
  | `_groupHover` | `[role=group]:hover &`, <br/> `[role=group][data-hover] &` | none |
  | `_groupFocus` | `[role=group]:focus &`, <br/> `[role=group][data-focus] &` | none |
  