vehicle_ids could be confusing (because vehicle_id != device_id), switch to vehicles

Author: avatarneil

general-information.md

@@ -129,7 +129,7 @@ All String fields, such as `vehicle_id`, are limited to a maximum of 255 charact
 | num_spaces_available    | {vehicle_type: number}                                                            | Optional          | How many spaces are free to be populated with vehicles at this stop?                                                                                  |
 | num_spaces_disabled     | {vehicle_type: number}                                                            | Optional          | How many spaces are disabled and unable to accept vehicles at this stop?                                                                              |
 | parent_stop            | UUID                                                                              | Optional          | Describe a basic hierarchy of stops (e.g.a stop inside of a greater stop)                                                                            |
-| vehicle_ids            | UUID[]                                                                            | Optional          | List of device_ids for vehicles which are currently at this stop                                                                                     |
+| vehicles            | UUID[]                                                                            | Optional          | List of device_ids for vehicles which are currently at this stop                                                                                     |
 
 ### Stop Status