adjusted dedup stats block test assertions to reflect updated configuration

dhp-workflows/dhp-dedup-openaire/src/test/java/eu/dnetlib/dhp/oa/dedup/SparkStatsTest.java

@@ -172,6 +172,6 @@ public class SparkStatsTest implements Serializable {
 		assertEquals(868, pubs_blocks);
 		assertEquals(473, sw_blocks);
 		assertEquals(523, ds_blocks);
-		assertEquals(55, orp_blocks);
+		assertEquals(756, orp_blocks);
 	}
 }