quickstart.md in review-1.7.0

- old
+ new

@@ -189,10 +189,10 @@
 
 </body>
 </html>
 ```
 
-For more information about Re:VIEW format, see [format.rdoc](https://github.com/kmuto/review/blob/master/doc/format.rdoc).
+For more information about Re:VIEW format, see [format.md](https://github.com/kmuto/review/blob/master/doc/format.md).
 
 review-compile and other commands in Re:VIEW has `--help` option to output help.  `review-compile` has many options, so you may see them.
 
 If you don't want to type `--target` every time, you can use symbolic links to `review-compile`. You can use new commands `review2html` and so on.
 