message: fix szokodiakos#196's discovered doc issue
  README: change bitwise OR to array in "itemsRefPath"
diff: @@ -462,7 +462,7 @@ Note that unfortunately the [reflect-metadata](https://github.com/rbuckton/refle
  // in another class
  class Another {
  - @prop({ required: true, enum: 'Car' | 'Shop' })
  + @prop({ required: true, enum: ['Car', 'Shop'] })
  which!: string;
  @arrayProp({ itemsRefPath: 'which' })
  