[STUDENTS] More visual effects updates

[Phil Bull]

Hi guys,

While committing Nick's recent patch, I noticed something else in the
visual effects document that needs improving. If you look at the
"Configuring visual effects" section, the final paragraph needs a bit of
attention. The formatting should be improved and I think it could be
broken up to make it easier to scan.

Any volunteers?

Thanks,

Phil

-- 
Phil Bull
https://launchpad.net/people/philbull