try to capitalize Ozy's tag

The one word "ozy" felt like a reasonable lowercase tag at the time, but I'm
likely going to end up with "Julia Serano" and "Scott Alexander" tags, which
should clearly be capitalized; I should treat Ozy the same.

(At commit time, the development server seems to still be rendering the tag as
lowercase, which is _deeply confusing_ and may need to be debugged later??)