Remove additional characters in request 4

[Dhanashri Patil]

https://github.com/FIWARE/tutorials.Short-Term-History#four-request

curl -X GET
'http://localhost:1026/v2/subscriptions/'
-H 'fiware-service: openiot'
-H 'fiware-servicepath: /'
}'

Remove the last }' at the end of the request above