[Schema Inaccuracy] `milestone.state` property on `milestone.closed` event should only be `closed`

[wolfy1339]

Schema Inaccuracy

In the schema for the milestone.closed webhook, the milestone.state property is an enum, there are 2 possible values defined open, and closed, when there should only be one: closed

Expected

The milestone.state property should be closed on the milestone.closed webhook event

Reproduction Steps

N/A