Mentions separate build directory for website work (issue 6092045)

[graham]

http://codereview.appspot.com/6092045/diff/1/Documentation/contributor/website-work.itexi
File Documentation/contributor/website-work.itexi (right):

http://codereview.appspot.com/6092045/diff/1/Documentation/contributor/website-work.itexi#newcode81
Documentation/contributor/website-work.itexi:81: Note that the website
will fail to build if you do not build it
Everybody *should* be building it in a separate directory, but I still
consider it a bug that it doesn't work in the same directory.  Is it
just missing a mkdir -p or something like that?

http://codereview.appspot.com/6092045/