[x/tour] content: fix formatting issue
[x/tour] content: fix formatting issue

Fixes #7

Change-Id: Ifd2bf48ceaa3e61771f7bf38c17b5be7ed0bc197
Reviewed-on: https://go-review.googlesource.com/22361
Reviewed-by: Francesc Campoy Flores <3149fa091f5edfa916be664d7a800f2d780f07b1@golang.org>
X-Tour-Commit: b9da173772bb642757acc6a9efd610daad8b3227

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website