Typo in W3C validator installation instructions

Cheers,

just a quick note of a typo in the w3c validation service installation  
instructions ( http://validator.w3.org/docs/install.html );

on "Step 1: install OpenSP, the SGML (and XML) parser", the manual  
installation instructions tell to configure the OpenSP using the  
following line:
../configure --enable-http --disable-docs-build

But the correct syntax seems to be (at least for the 1.5.2 version  
from sourceforge downloads):

../configure --enable-http --disable-doc-build

(Thus, doc instead of docs)