[x/blog] content: fix typo and add forward blog post reference
[x/blog] content: fix typo and add forward blog post reference

Change-Id: Id6eeddc79a55095af68ee5b452119ea488b12870
Reviewed-on: https://go-review.googlesource.com/19517
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>
X-Blog-Commit: 269f87ce4308f36b06088905c9cd0f8e9b563400

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