message: docs(Popover): add zh-CN document
diff: @@ -23,7 +23,6 @@ export default createComponent({
  props: {
  value: Boolean,
  overlay: Boolean,
  - placement: String,
  textColor: String,
  backgroundColor: String,
  offset: {
  @@ -38,6 +37,10 @@ export default createComponent({
  type: Array,
  default: () => [],
  },
  + placement: {
  + type: String,
  + default: 'bottom',
  + },
  getContainer: {
  type: [String, Function],
  default: 'body',
  