[x/blog] content: add pandemic.article
[x/blog] content: add pandemic.article

Change-Id: I8ef3864a022838cb9a84d1800fd1372830437fe9
Reviewed-on: https://go-review.googlesource.com/c/blog/+/225519
Run-TryBot: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
Reviewed-by: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
X-Blog-Commit: cb84bd388c9dd7d90803ac2ddfb6c5720b9588ff

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