Fix position of 'Note:' in the Notes edit page

Another small fix.

Before:
![screen shot 2013-10-05 at 11 11 05 pm](https://f.cloud.github.com/assets/817212/1276098/253a9ae4-2e36-11e3-9790-c40aaef68485.png)

After:
![screen shot 2013-10-05 at 11 18 00 pm](https://f.cloud.github.com/assets/817212/1276099/25404354-2e36-11e3-9bc5-1b86ec0dda74.png)

An alternative would be to continue to use a label, but we'd need to reset the style for the element. I'm hoping to avoid adding one-time-use classes to the css.