Typo in documentation for the user redaction endpoint

https://element-hq.github.io/synapse/latest/admin_api/user_admin_api.html#check-the-status-of-a-redaction-process

Says `completed` as one of the variants for status when it should be `complete`

https://github.com/element-hq/synapse/blob/develop/synapse/types/__init__.py#L1398