Describe the bug
Documentation says CMenuOptionGroup accepts string, number, Array as a value of the :value attribute. However, when array is passed a warning is thrown in the console:

Invalid prop: type check failed for prop "value". Expected String, Number, got Array

However, components itself work as expected.

To Reproduce
Steps to reproduce the behavior:

1. Create a menu with the following contents in the dev environment:

<c-menu-option-group title="Country" type="checkbox" :value="['email','phone']">
      <c-menu-item-option value="email">Email</c-menu-item-option>
      <c-menu-item-option value="phone">Phone</c-menu-item-option>
      <c-menu-item-option value="country">Country</c-menu-item-option>
</c-menu-option-group>

2. See the error in the console.

Expected behavior
No errors shown, since Array value for this prop is documented.

Desktop (please complete the following information):

• MacOS latest
• Chrome latest