Add changelog entry for opentripplanner#6597 [ci skip]

Author: OTP Changelog Bot

doc/user/Changelog.md

@@ -22,6 +22,7 @@ based on merged pull requests. Search GitHub issues and pull requests for smalle
 - Remove REST API [#6578](https://github.com/opentripplanner/OpenTripPlanner/pull/6578)
 - Don't use bicycle as street routing mode when car or scooter rental is requested [#6599](https://github.com/opentripplanner/OpenTripPlanner/pull/6599)
 - Updating SIRI objects used to SIRI 2.1 [#6573](https://github.com/opentripplanner/OpenTripPlanner/pull/6573)
+- Set correct transfer modes for scooters in deprecated `plan` query [#6597](https://github.com/opentripplanner/OpenTripPlanner/pull/6597)
 [](AUTOMATIC_CHANGELOG_PLACEHOLDER_DO_NOT_REMOVE)
 
 ## 2.7.0 (2025-03-12)