Update examples-ldp-vp.md

Author: peacekeeper

examples-ldp-vp.md

@@ -46,6 +46,7 @@ Verifiable Presentations with Linked Data Proofs:
 
     VerifiablePresentation verifiablePresentation = VerifiablePresentation.builder()
             .verifiableCredential(verifiableCredential)
+            .holder(URI.create("did:key:z6MkwBZ6oiJ71ovCohPfdsgBrQinMXnFn6wJxVZHpZEpSh8x"))
             .build();
 
     byte[] testEd25519PrivateKey2 = Hex.decodeHex("984b589e121040156838303f107e13150be4a80fc5088ccba0b0bdc9b1d89090de8777a28f8da1a74e7a13090ed974d879bf692d001cddee16e4cc9f84b60580".toCharArray());