Improve formatting of about page code
Improve formatting of about page code

I mostly wanted to wrap the long line in this file, but I also added a
`yield` for the title. This DRYs up the code a bit, making it a little
easier to maintain.

Change-Id: I0ef05f3282f8f5761e59a6d160aadc303ed36649

kalw/diffux,kalw/diffux,diffux/diffux,kalw/diffux,diffux/diffux,diffux/diffux