Fix exception message

src/main/java/com/zaxxer/hikari/HikariDataSource.java

@@ -79,7 +79,7 @@ public class HikariDataSource extends HikariConfig implements DataSource, Closea
    public Connection getConnection() throws SQLException
    {
       if (isShutdown) {
-         throw new SQLException("Pool {} has been shutdown", pool.getConfiguration().getPoolName());
+         throw new SQLException(String.format("Pool %s has been shutdown", pool.getConfiguration().getPoolName()));
       }
 
       if (fastPathPool != null) {

src/test/java/com/zaxxer/hikari/ShutdownTest.java

@@ -222,7 +222,7 @@ public class ShutdownTest
            ds.getConnection();
        }
        catch (SQLException e) {
-          Assert.assertTrue(e.getMessage().contains("Pool has been shutdown"));
+          Assert.assertTrue(e.getMessage().contains("has been shutdown"));
        }
    }