Update Entity.json

schema/Entity.json

@@ -103,7 +103,7 @@
           "const": "GeoProperty"
         },
         "value": {
-          "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/geometry-schema.json#"
+          "$ref": "http://json-schema.org/geojson/geometry.json#"
         },
         "observedAt": {
           "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/common.json#/definitions/observedAt"