[Improve] code style improvement

Author: wolfboys

streampark-flink/streampark-flink-connector-test/src/test/java/org/apache/streampark/flink/quickstart/connector/MySQLJavaApp.java

@@ -38,7 +38,7 @@ public static void main(String[] args) {
     StreamingContext context = new StreamingContext(envConfig);
 
     // 读取MySQL数据源
-    new JdbcJavaSource<Order>(context, Order.class)
+    new JdbcJavaSource<>(context, Order.class)
         .getDataStream(
             (SQLQueryFunction<Order>)
                 lastOne -> {