<a href="www.sohu.com/doc/mui_h5plus/(.+)"
替换
<a href="./\1\.htm"
则
<a href="www.sohu.com/doc/mui_h5plus/aaaa"
<a href="www.sohu.com/doc/mui_h5plus/bbbb"
<a href="www.sohu.com/doc/mui_h5plus/cccc"
<a href="www.sohu.com/doc/mui_h5plus/dddd"
替换成
<a href="./aaaa.htm"
<a href="./bbbb.htm"
<a href="./cccc.htm"
<a href="./dddd.htm"