### Summary This PR closes #25640 by fixing the incorrect `source` value in the device mapping REST API docs. The real value is `mdm_idp_accounts` which can be found [here](https://github.com/fleetdm/fleet/blob/15ac79323858c7344677edd5eb01b9a0d548120f/server/fleet/hosts.go#L894). ### Test Plan - [x] Changes file added for user-visible changes in `changes/`, `orbit/changes/` or `ee/fleetd-chrome/changes`. See [Changes files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/Committing-Changes.md#changes-files) for more information. I couldn't find any other references to `identity_provider`, so I think these two were all of them.
Fleet documentation
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