Fix handling of UpdateBehavior.WRITE_IF_NOT_EXISTS on @DynamoDbAutoGeneratedUuid

Author: anasatirbasa

services-custom/dynamodb-enhanced/src/test/java/software/amazon/awssdk/enhanced/dynamodb/functionaltests/AutoGeneratedUuidRecordTest.java

@@ -535,8 +535,8 @@ public void transactUpdateThenUpdate_noUuids_thenCreatedUuidIsPreserved_andLastU
     // ======================================================================
     // SCENARIO 4: transactWriteItems.addUpdateItem → addUpdateItem
     // Case B:     createdUuid provided in request payload   (but ignored)
-    // createdUuid stays the same after both updates     (UpdateBehaviour.WRITE_IF_NOT_EXISTS)
-    // lastUpdatedUuid changes after every update        (UpdateBehaviour.WRITE_ALWAYS)
+    // createdUuid stays the same after both updates         (UpdateBehaviour.WRITE_IF_NOT_EXISTS)
+    // lastUpdatedUuid changes after every update            (UpdateBehaviour.WRITE_ALWAYS)
     // ======================================================================
     @Test
     public void transactUpdateThenUpdateItem_withManualCreatedUuid_thenCreatedUuidIsIgnored_andLastUpdatedUuidChangedEachTime() {