content/go-fonts: change scaling in code sample
content/go-fonts: change scaling in code sample

Make it an exact factor of two to reduce fuzziness (maybe).

Change-Id: I9e87dfc0b9b211b1397068a38c409b6aaf9b0747
Reviewed-on: https://go-review.googlesource.com/33360
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

jeffreyliguori/blog