What if it's markdown?

doc/tutorial/Server.md

@@ -229,7 +229,7 @@ main = run 8081 app1
 You can put this all into a file or just grab [servant's
 repo](http://github.com/haskell-servant/servant) and look at the
 *doc/tutorial* directory. This code (the source of this web page) is in
-*doc/tutorial/Server.lhs*.
+*doc/tutorial/Server.md*.
 
 If you run it, you can go to `http://localhost:8081/users` in your browser or
 query it with curl and you see:

doc/tutorial/index.rst

@@ -12,7 +12,7 @@ through
   :maxdepth: 1
 
   ApiType.lhs
-  Server.lhs
+  Server.md
   Client.lhs
   Javascript.lhs
   Docs.lhs