Update request

Author: jason-fox

docs/working-with-linked-data.md

@@ -537,7 +537,6 @@ The equivalent cUrl statement can be seen below:
 ```bash
 curl -G -X GET 'http://localhost:1026/ngsi-ld/v1/entities/' \
 -H 'Link: <http://context/ngsi-context.jsonld>; rel="http://www.w3.org/ns/json-ld#context"; type="application/ld+json"' \
--H 'Content-Type: application/json' \
 -H 'Accept: application/json' \
 -d 'type=Shelf' \
 -d 'options=keyValues' \