typo (#4217)

Signed-off-by: Sally MacFarlane <sally.macfarlane@consensys.net>

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/EthPeer.java

@@ -215,7 +215,7 @@ public class EthPeer implements Comparable<EthPeer> {
   }
 
   public void recordUsefulResponse() {
-    reputation.recordUsefulResposne();
+    reputation.recordUsefulResponse();
   }
 
   public void disconnect(final DisconnectReason reason) {

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/PeerReputation.java

@@ -85,7 +85,7 @@ public class PeerReputation implements Comparable<PeerReputation> {
     }
   }
 
-  public void recordUsefulResposne() {
+  public void recordUsefulResponse() {
     score += SMALL_ADJUSTMENT;
   }
 

ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/PeerReputationTest.java

@@ -83,7 +83,7 @@ public class PeerReputationTest {
 
   @Test
   public void shouldIncreaseScore() {
-    reputation.recordUsefulResposne();
+    reputation.recordUsefulResponse();
     assertThat(reputation.compareTo(new PeerReputation())).isGreaterThan(0);
   }
 }