message: docs(Popover): add en-US document
diff: @@ -143,7 +143,7 @@ export default {
  showPopover: 'Show Popover',
  actionOptions: 'Action Options',
  disableAction: 'Disable Action',
  - choosePlacement: 'Choose Placement',
  + choosePlacement: 'Placement',
  },
  },
  