message: Fixed wrongly named variable in Java how-to for credential issuance
diff: @@ -113,7 +113,7 @@ public class IssueCredential {
  " \"age\":[\"28\",\"28\"]\n" +
  " }";
  AnoncredsResults.IssuerCreateClaimResult createClaimResult = issuerCreateClaim(walletHandle, claimRequestJSON,
  - claimAttributesJson, - 1).get();
  + credAttribsJson, - 1).get();
  String claimJSON = createClaimResult.getClaimJson();
  System.out.println("Claim:\n" + claimJSON);
  