IDEA中运行suite.xml报错，!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd"

[TestNGContentHandler] [WARN] It is strongly recommended to add “” at the top of your file, otherwise TestNG may fail or not work as expected.beforesuite运行了
beforetest

解除方法如下：添加红色框框里面的内容即可。