Updated RS Auto_RX JSON Formats (markdown)

RS----Auto_RX-JSON-Formats.md

@@ -1,11 +1,12 @@
 auto_rx uses rs1729's [RS radiosonde decoders](https://github.com/rs1729/RS) to decode radio telemetry, with the decoded telemetry passed into auto_rx as JSON objects, which are then interpreted. In the default use-cases, auto_rx starts up the decoders itself, and reads the JSON data from the decoder's stdout. In 'UDP mode', auto_rx listens for JSON objects via UDP packets, on port 50000.
 
-This page attempts to describe the format of the JSON objects which are passed between the RS decoders and auto_rx.
+This page attempts to describe the format of the JSON objects which are passed between the RS decoders and auto_rx. Note that this is different to the ['payload summary'](https://github.com/projecthorus/horus_utils/wiki/5.-UDP-Broadcast-Messages#payload-summary-payload_summary) JSON format emitted by auto_rx.
 
 ## Overall Format Description
 Telemetry is passed as JSON objects, with a range of mandatory and optional fields.
 
 ### Mandatory Fields
+These fields represent the bare minimum amount of data for a sonde position to be plotted on a map, enabling recovery.
 
 Field | Type | Description | Special Cases
 ------|------|-------------|--------------