报错：“The content of element type "package" must match "(result-types?,interceptors?,default-intercept

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="hello" namespace="/hello" extends="struts-default">
<ation name="HelloAction" class="cn.heima.a_hello.HelloWorld" method="hello">
<result name="success">/hello.jsp</result>
</ation>
</package>

</struts>

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action标签写错了！