Update java-features.cn.md

Author: taowen

java-features.cn.md

@@ -212,7 +212,7 @@ public class DemoCodegenConfig implements CodegenConfig {
 	    <arguments>
 		<argument>-classpath</argument>
 		<classpath/>
-		<argument>com.jsoniter.StaticCodeGenerator</argument>
+		<argument>com.jsoniter.static_codegen.StaticCodegen</argument>
 		<argument>com.jsoniter.demo.DemoCodegenConfig</argument>
 	    </arguments>
 	</configuration>