Fix Javadoc typo [AND WHY I HAVEN'T BEEN COMMITTING TO MASTER]

Why I Haven't Been Committing To Master
=======================================

Simple: I've been working in other branches.

Currently, my work on this project has been specialized in different
topic branches. Most of my recent development has been in the
sweepstakes branch (I've almost finished that system, just writing unit
tests). Thus, I haven't had much need to use master lately.

This pattern will probably continue for some time--I have two other
branches that are just getting started (network-reliability and
implement-slide) and will probably be time-consuming, especially with
all the unit tests I'll have to write. So, for the time being, my Github
contributions will take a hit as I fiddle with endless topic branches
before committing to master.

Hey, it's my branching workflow. Admittedly, I'm a git newbie, so this
might be naive...

...but hey, master is supposed to be deployable at all times...right?