doc: server: Fix "How to build a .cmxs".
doc: server: Fix "How to build a .cmxs".

Ignore-this: 57cc5a5eba0864108f4a39354c003bda

darcs-hash:20110125204529-da4f2-2c3e7a24808182ff0b1f4a343d2c980885544b07

mfp/ocsigenserver,mfp/ocsigenserver