Better layout.

Fixes #10859.

The issue suggests rearranging so the comment comes out
after the methods. I tried this and it looks good but it is less
useful, since the stuff you're probably looking for - the methods
- are scrolled away by the comment. The most important
information should be last because that leaves it on your
screen after the print if the output is long.

Change-Id: I560f992601ccbe2293c347fa1b1018a3f5346c82
Reviewed-on: https://go-review.googlesource.com/10160Reviewed-by: Russ Cox <rsc@golang.org>