OARec: add GeoJSON information

workshop/content/docs/api-deep-dive/records.md

@@ -354,6 +354,10 @@ queryables.  An example query based on a "search engine" style search using the
 Given OGC API - Records uses OGC API - Common and OGC API - Features as building blocks, please see the [OGC API - Features](features.md#feature) deep dive
 for a detailed explanation.
 
+### GeoJSON
+
+The OGC API - Records GeoJSON Requirements Class specifies a GeoJSON based encoding for Record core, based on RFC7946.  Given the ubiquity of GeoJSON, numerous tools exist to validate process and decode/encode GeoJSON, making OGC API - Records GeoJSON easy to include in metadata processing pipelines.  OGC API - Records includes the [JSON Schema](https://github.com/opengeospatial/ogcapi-records/blob/master/core/openapi/schemas/recordGeoJSON.yaml) for the GeoJSON representation and thus can be used for runtime or offline validation of metadata payloads.  Applications based on OGC API - Reocrds GeoJSON can extend and constrain the schema accordingly for domain specific workflows.
+
 ## Summary
 
 OGC API - Records provides functionality for working with metadata data on the Web. This deep dive provided an overview of the standard and the various Resources and endpoints that are supported.