convert the doc format to Markdown

Author: awxiaoxian2020

pom.xml

@@ -381,7 +381,7 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-site-plugin</artifactId>
         <configuration>
-          <locales>en,es,ja,fr,zh_CN,ko</locales>
+          <locales>en</locales>
         </configuration>
       </plugin>
       <plugin>