Correct context url

Author: bparth24

credentials/utopia-birth-certificate-vc-v2/queries.json

@@ -7,7 +7,7 @@
         "example": {
           "@context": [
             "https://www.w3.org/ns/credentials/v2",
-            "https://w3id.org/vital-records/v1rc3",
+            "https://w3id.org/vital-records/v1rc4",
             "https://w3id.org/vc/render-method/v2rc1"
           ],
           "type": ["BirthCertificateCredential"]