message: docs(fab): add label notes for fab
diff: @@ -69,6 +69,13 @@ import CSSShadowParts from '@site/static/usage/fab/theming/css-shadow-parts/inde
  <CSSShadowParts />
  +
  +## Accessibility
  +
  +### Labels
  +
  +Since FABs are allowed to contain only icons, developers must provide an `aria-label` on each `ion-fab-button` instance. Without this label, assistive technologies will not be able to announce the purpose of each button.
  +
  ## Properties
  <Props />
  