fixed typos (#429)

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

Co-authored-by: CJ Hare <CjHare@users.noreply.github.com>

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/core/Address.java

@@ -55,7 +55,7 @@ public class Address extends DelegatingBytes implements org.hyperledger.besu.plu
   public static Address wrap(final Bytes value) {
     checkArgument(
         value.size() == SIZE,
-        "An account address must be be %s bytes long, got %s",
+        "An account address must be %s bytes long, got %s",
         SIZE,
         value.size());
     return new Address(value);

ethereum/core/src/test/java/org/hyperledger/besu/ethereum/vm/AddressTest.java

@@ -41,7 +41,7 @@ public class AddressTest {
   }
 
   @Test
-  public void accountAddresHashCode() {
+  public void accountAddressHashCode() {
     final Address addr =
         Address.wrap(Bytes.fromHexString("0x0000000000000000000000000000000000101010"));
     final Address addr2 =