<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"