Update Gothamads account passing (prebid#3555)

Author: osulzhenko

src/main/java/org/prebid/server/bidder/gotthamads/GothamAdsBidder.java

@@ -34,7 +34,7 @@ public class GothamAdsBidder implements Bidder<BidRequest> {
 
     private static final TypeReference<ExtPrebid<?, GothamAdsImpExt>> TYPE_REFERENCE = new TypeReference<>() {
     };
-    private static final String ACCOUNT_ID_MACRO = "{{AccountId}}";
+    private static final String ACCOUNT_ID_MACRO = "{{AccountID}}";
     private static final String X_OPENRTB_VERSION = "2.5";
 
     private final String endpointUrl;

src/test/java/org/prebid/server/bidder/gothamads/GothamAdsBidderTest.java

@@ -46,7 +46,7 @@
 
 public class GothamAdsBidderTest extends VertxTest {
 
-    private static final String ENDPOINT_URL = "https://test-url.com/?pass={{AccountId}}";
+    private static final String ENDPOINT_URL = "https://test-url.com/?pass={{AccountID}}";
 
     private final GothamAdsBidder target = new GothamAdsBidder(ENDPOINT_URL, jacksonMapper);